Derivatives of n-(arylsulfonyl)beta-aminoacids comprising a substituted aminomethyl group, the preparation method thereof and the pharmaceutical compositions containing same

ABSTRACT

The invention relates to compounds of formula: 
                         
These compounds show affinity for the bradykinin receptors with selectivity towards the B 1  receptors; they may be used for the preparation of medicinal products intended for treating or preventing inflammation pathologies and persistent or chronic inflammatory diseases.

The present invention relates to novel N-(arylsulphonyl)beta-amino acid derivatives comprising a substituted aminomethyl group, to their preparation and to pharmaceutical compositions containing them.

These compositions have affinity for the bradykinin (BK) receptors. Bradykinin is a nonapeptide belonging, like kallidin, to the kinin class and shows physiological activity in the cardiovascular field and as a mediator in inflammation and pain. Several bradykinin receptors are distinguished: the B₁ and B₂ receptors (D. Regoli et al., Pharmacol. Rev., 1980, 32, 1–46). More specifically, the B₂ receptors are the receptors for bradykinin and kallidin: they are predominant and are especially found in most tissues; the B₁ receptors are the receptors specific for [des-Arg⁹] bradykinin and [des-Arg¹⁰] kallidin: they are induced during inflammation processes.

Bradykinin receptors have been cloned for various species, especially for the human species: B₁ receptor: J. G. Menke et al., J. Biol. Chem., 1994, 269 (34), 21583–21586; B₂ receptor: J. F. Hess, Biochem. Biophys. Res. Commun., 1992, 184, 260–268.

Patent application WO 97/25315 describes compounds of formula:

in which:

-   -   R_(I), R_(II), R_(III), R_(IV), R_(V), R_(VI), R_(VII),         R_(VIII), R_(IX), R_(X) and R_(XI) have different values. These         compounds show affinity for the bradykinin receptors.

Novel compounds have now been found, which show affinity for the bradykinin receptors with selectivity towards the bradykinin B₁ receptors, which are bradykinin B₁ receptor antagonists and which show advantages as regards their absorption.

These compounds may be used for the preparation of medicinal products that are useful for treating or preventing any pathology in which bradykinin and the B₁ receptors are involved, especially inflammation pathologies and persistent or chronic inflammatory diseases.

Thus, according to one of its aspects, the subject of the present invention is compounds of formula:

in which:

-   -   R₁ represents a phenylvinyl group; a phenyl group which is         unsubstituted or substituted one or more times with R₆, which         may be identical or different; a naphthyl group which is         unsubstituted or substituted one or more times with R₆, which         may be identical or different; a tetrahydronaphthyl group; a         naphtho[2,3-d][1,3]dioxol-6-yl group; a heterocyclic radical         chosen from quinolyl, isoquinolyl, 1-benzofur-2-yl,         2,1,3-benzoxadiazol-4-yl, 2,1,3-benzothiadiazol-4-yl,         1,3-benzothiazol-2-yl, 1-benzothiophen-2-yl, 1H-pyrazol-4-yl,         thien-2-yl, 5-isoxazolthien-2-yl, benzothien-2-yl,         thieno[3,2-c]pyrid-2-yl; the said heterocyclic radicals being         unsubstituted or substituted one or more times with R₆, which         may be identical or different;     -   R₂ represents hydrogen or a (C₁–C₄)alkyl group and R₃ represents         a phenyl group which is unsubstituted or substituted one or more         times with R₇, which may be identical or different; a         heterocyclic radical chosen from benzo[1,3]dioxol-5-yl,         2,1,3-benzothiadiazol-5-yl, 2,1,3-benzoxadiazol-5-yl,         benzothiophen-5-yl, 2,3-dihydrobenzo[1,4]dioxin-6-yl,         benzofuryl, dihydrobenzofuryl, 1,3-thiazol-2-yl, furyl and         thienyl, the said heterocyclic radical being unsubstituted or         substituted one or more times with a halogen atom or with a         (C₁–C₄)alkyl group;     -   or alternatively R₂ represents a phenyl group which is         unsubstituted or substituted one or more times with R₆, which         may be identical or different; a heterocyclic radical chosen         from benzo[1,3]dioxol-5-yl, pyridyl and indanyl, and R₃         represents hydrogen;     -   R₄ represents a group —CONR₈R₉; a group —CSNR₈R₉; a group         —COR₁₃; a phenyl group which is unsubstituted or substituted one         or more times with R₁₀; a heterocyclic radical chosen from         pyridyl, imidazolyl, furyl, benzimidazolyl, benzothiazol-2-yl         and benzo[1,3]dioxol-5-yl, the said radicals being unsubstituted         or substituted with one or more methyl groups or halogen atoms;     -   R₅ represents a group —CH₂NR₁₁R₁₂ or CH₂N(O)R₁₁R₁₂;     -   R₆ represents a halogen atom; a (C₁–C₄)alkyl group; a         trifluoromethyl group; a (C₁–C₄)alkoxy group; a 2-fluoroethoxy         group; a trifluoromethoxy, methylenedioxy or         difluoromethylenedioxy group;     -   R₇ represents a halogen atom; a (C₁–C₄)alkyl group; a phenyl         group; a trifluoromethyl group; a (C₁–C₄)alkoxy group; a         benzyloxy group; a trifluoromethoxy group;     -   R₈ and R₉ each independently represent hydrogen; a (C₁–C₄)alkyl         group; a (C₃–C₇)cycloalkyl group; a         (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an         ω-(C₁–C₄)dialkylamino(C₂–C₄)alkyl group;     -   or alternatively R₈ and R₉, together with the nitrogen atom to         which they are attached, constitute a heterocyclic radical         chosen from pyrrolidinyl, morpholin-4-yl, thiomorpholin-4-yl,         azepin-1-yl, piperidyl which is unsubstituted or substituted         with one or more halogen atoms or one or more (C₁–C₄)alkyl or         (C₁–C₄)alkoxy or trifluoromethyl groups,         3,4-dihydropiperid-1-yl, cyclohexyl-spiro-4-piperid-1-yl, and         piperazinyl which is unsubstituted or substituted with one or         more (C₁–C₄)alkyl groups;     -   R₁₀ represents a halogen atom; a (C₁–C₄)alkyl group; a hydroxy         group; a (C₁–C₆)alkoxy group; R₁₀ can also represent a group         —CH₂NR₁₁R₁₂ when R₅ represents a group —CH₂NR₁₁R₁₂, the said         groups then being identical;     -   R₁₁ and R₁₂ each independently represent hydrogen; a         (C₁–C₆)alkyl group; a (C₂–C₄)alkenyl group; a (C₃–C₇)cycloalkyl         group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an         ω-hydroxy(C₂–C₄)alkylene group; an ω-methoxy(C₂–C₄)alkylene         group; ω-trifluoromethyl(C₂–C₄)alkylene group; an         ω-halo(C₂–C₄)alkylene group,     -   or alternatively R₁₁ and R₁₂, together with the nitrogen atom to         which they are attached, constitute a monocyclic, bicyclic or         heterocyclic radical chosen from azetidinyl, pyrrolidinyl,         morpholin-4-yl, thiomorpholin-4-yl, piperid-1-yl,         piperazin-1-yl, 1,2,3,6-tetrahydropyrid-1-yl,         2,3,4,5-tetrahydropyridinium, decahydroquinolyl,         decahydroisoquinolyl, tetrahydroisoquinolyl,         octahydro-1H-isoindolyl, (C₄–C₆)cycloalkyl-spiro-piperidyl,         3-azabicyclo[3.1.0]hexyl and 7-azabicyclo[2.2.1]heptan-7-yl,         which may be unsubstituted or substituted one or more times with         a halogen atom or a (C₁–C₄)alkyl, hydroxyl, (C₁–C₄)alkoxy,         trifluoromethyl, difluoromethylene or phenyl group;     -   R₁₃ represents a phenyl, thiazol-2-yl or pyridyl group;         and also the salts thereof with mineral or organic acids and/or         the solvates thereof or the hydrates thereof.

The term “halogen” means a fluorine, chlorine, bromine or iodine atom.

The terms “alkyl”, “alkylene” and “alkoxy”, respectively, mean a linear or branched alkyl radical, a linear or branched alkylene radical or a linear or branched alkoxy radical, respectively.

The compounds of formula (I) comprise at least one asymmetric carbon atom, and the pure enantiomers or diastereoisomers and also mixtures thereof in all proportions are subjects of the invention.

Preferably, a subject of the present invention is compounds of formula:

in which:

-   -   R₁ represents a phenylvinyl group; a phenyl group which is         unsubstituted or substituted one or more times with R₆, which         may be identical or different; a naphthyl group which is         unsubstituted or substituted one or more times with R₆, which         may be identical or different; a tetrahydronaphthyl group; a         heterocyclic radical chosen from quinolyl, 1-benzofur-2-yl,         2,1,3-benzoxadiazol-4-yl, 2,1,3-benzothiadiazol-4-yl,         1,3-benzothiazol-2-yl, 1-benzothiophen-2-yl, 1H-pyrazol-4-yl,         thien-2-yl, 5-isoxazolethien-2-yl, benzothien-2-yl,         thieno[3,2-c]pyrid-2-yl; naphtho[2,3-d][1,3]dioxol-6-yl; the         said heterocyclic radicals being unsubstituted or substituted         one or more times with R₆, which may be identical or different;     -   R₂ represents hydrogen or a (C₁–C₄)alkyl group and R₃ represents         a phenyl group which is unsubstituted or substituted one or more         times with R₇, which may be identical or different; a         heterocyclic radical chosen from benzo[1,3]dioxol-5-yl which is         unsubstituted or substituted in the −2 position with two         fluorine atoms; 2,1,3-benzothiadiazol-5-yl;         2,3-dihydrobenzo[1,4]dioxin-6-yl; 1,3-thiazol-2-yl;         1-benzofur-2-yl; 1-benzofur-5-yl; furyl; thien-2-yl; thien-3-yl;     -   or R₂ represents a phenyl group which is unsubstituted or         substituted one or more times with R₆, which may be identical or         different; a heterocyclic radical chosen from         benzo[1,3]dioxol-5-yl; pyridyl; indanyl; and R₃ represents         hydrogen;     -   R₄ represents a group —CONR₈R₉; a phenyl group which is         unsubstituted or substituted one or more times with R₁₀; a         heterocyclic radical chosen from pyridyl, imidazolyl, furyl,         benzimidazolyl, benzothiazol-2-yl and benzo[1,3]dioxol-5-yl, the         said radicals being unsubstituted or substituted with a methyl;     -   R₅ represents a group —CH₂NR₁₁R₁₂;     -   R₆ represents a halogen atom; a (C₁–C₄)alkyl group; a         trifluoromethyl group; a (C₁–C₄)alkoxy group; a 2-fluoroethoxy         group; a trifluoromethoxy, methylenedioxy or         difluoromethylenedioxy group;     -   R₇ represents a halogen atom; a (C₁–C₄)alkyl group; a         trifluoromethyl group; a (C₁–C₄)alkoxy group; a benzyloxy group;         a trifluoromethoxy group;     -   R₈ and R₉ each independently represent hydrogen; a (C₁–C₄)alkyl         group; a (C₃–C₇)cycloalkyl group; a         (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an         ω-(C₁–C₄)dialkylamino(C₂–C₄)alkyl group;     -   or R₈ and R₉, together with the nitrogen atom to which they are         attached, constitute a heterocyclic radical chosen from         pyrrolidinyl, piperidyl, morpholin-4-yl, thiomorpholin-4-yl,         piperazin-1-yl, 4-methylpiperazin-1-yl, 4-methylpiperid-1-yl,         2-methylpiperid-1-yl, 4,4-dimethylpiperid-1-yl,         4,4-difluoropiperid-1-yl, 4-trifluoromethylpiperid-1-yl,         3,4-dihydropiperid-1-yl, azepin-1-yl and         cyclohexyl-spiro-4-piperid-1-yl;     -   R₁₀ represents a halogen atom; a (C₁–C₄)alkyl group; a hydroxyl         group; a (C₁–C₆)alkoxy group; R₁₀ can also represent a group         —CH₂NR₁₁R₁₂ when R₅ represents a group —CH₂NR₁₁R₁₂, the said         groups then being identical;     -   R₁₁ and R₁₂ each independently represent hydrogen; a         (C₁–C₆)alkyl group; a (C₂–C₄)alkenyl group; a (C₃–C₇)cycloalkyl         group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an         ω-hydroxy(C₂–C₄)alkylene group; an ω-methoxy(C₂–C₄)alkylene         group; an ω-trifluoromethyl(C₂–C₄)alkylene group; an         ω-halo(C₂–C₄)alkylene group;     -   or R₁₁ and R₁₂, together with the nitrogen atom to which they         are attached, constitute a monocyclic, bicyclic or heterocyclic         radical chosen from azetidinyl, pyrrolidinyl, morpholin-4-yl,         thiomorpholin-4-yl, piperid-1-yl, piperazin-1-yl,         1,2,3,6-tetrahydropyrid-1-yl, decahydroquinolyl,         decahydroisoquinolyl, octahydro-1H-isoindolyl,         (C₄–C₆)cycloalkyl-spiro-piperidyl and 3-azabicyclo[3.1.0]hexyl,         which may be unsubstituted or substituted one or more times with         a halogen atom or a (C₁–C₄)alkyl, hydroxyl, (C₁–C₄)alkoxy,         trifluoromethyl, difluoromethylene or phenyl group;         and also the salts thereof with mineral or organic acids and/or         solvates thereof or hydrates thereof.

Furthermore, certain values of the substituents are preferred. Thus, the compounds of formula (I) that are preferred are those in which at least one of the substituents has a value specified below:

a—R₁ represents a 2,4-dichloro-3-methylphenyl, naphthyl, 6-methoxynaphth-2-yl, 3-methylbenzothiophen-2-yl, 3-methyl-5-chlorobenzothiophen-2-yl, 3-methyl-5-methoxybenzothiophen-2-yl, 3-methyl-6-methoxybenzothiophen-2-yl or 3-methyl-1-benzofur-2-yl group; R₂, R₃, R₄ and R₅ are as defined for a compound of formula (I);

b—R₂ represents hydrogen and preferably R₃ represents a benzo[1,3]dioxol-5-yl or phenyl group which is unsubstituted or substituted with a halogen; R₁, R₄ and R₅ are as defined for a compound of formula (I);

c—R₄ represents a group —CONR₈R₉ and preferably —NR₈R₉ represents a di(C₁–C₄)alkylamino radical, most particularly an N-methylisopropyl radical; a pyrrolidinyl or piperidyl group which is unsubstituted or substituted one or two times with a methyl or a halogen; R₁, R₂, R₃ and R₅ are as defined for a compound of formula (I);

d—R₅ represents a group —CH₂NR₁₁R₁₂ in which —NR₁₁R₁₂ represents an ethylisobutylamino, ethylisopropylamino, ethyl-tert-butylamino, diisopropylamino, cyclopentylmethylamino or cyclopentylethylamino radical or a piperidyl radical which is unsubstituted or substituted one or more times with a methyl or a halogen; R₁, R₂, R₃ and R₄ are as defined for a compound of formula (I).

Thus, preferably, the present invention relates to compounds of formula:

in which:

-   -   R₁ represents a 2,4-dichloro-3-methylphenyl, naphthyl,         6-methoxynaphth-2-yl, 3-methylbenzothiophen-2-yl,         3-methyl-5-chlorobenzothiophen-2-yl,         3-methyl-5-methoxybenzothiophen-2-yl,         3-methyl-6-methoxybenzothiophen-2-yl or 3-methyl-1-benzofur-2-yl         group;     -   R₃ represents a benzo[1,3]dioxol-5-yl or phenyl group which is         unsubstituted or substituted with a halogen;     -   R₈ and R₉, together with the nitrogen atom to which they are         attached, constitute a di(C₁–C₄)alkylamino, pyrrolidinyl or         piperidyl radical which is unsubstituted or substituted one or         two times with a methyl or a halogen;     -   R₁₁ and R₁₂, together with the nitrogen atom to which they are         attached, constitute an ethylisobutylamino, ethylisopropylamino,         ethyl-tert-butylamino, diisopropylamino, cyclopentylmethylamino         or cyclopentylethylamino radical or a piperidyl radical which is         unsubstituted or substituted one or more times with a methyl or         a halogen;         and also the salts thereof with mineral or organic acids and/or         solvates thereof or hydrates thereof.

The compounds of formula (Ia) having the (R,R) configuration are particularly preferred.

Most particularly, a subject of the present invention is a compound chosen from:

-   -   (R,R)         2-((3-(1,3-benzodioxol-5-yl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide;     -   (R,R)         2-((3-(1,3-benzodioxol-5-yl)-3-((2-naphthylsulphonyl)amino)propanoyl)amino)-3-(4-((cyclopentyl(ethyl)amino)methyl)phenyl)-N-isopropyl-N-methylpropanamide;     -   (R,R)         3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-2-((3-(((6-methoxy-2-naphthyl)sulphonyl)amino)-3-phenylpropanoyl)amino)-N-isopropyl-N-methyl         propanamide;     -   (R,R)         2-((3-(1,3-benzodioxol-5-yl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((tert-butyl(ethyl)amino)methyl)phenyl)-N-isopropyl-N-methylpropanamide;     -   (R,R)         2-((3-(1,3-benzodioxol-5-yl)-3-(((3-methyl-1-benzothiophen-2-yl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide;     -   (R,R)         3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-2-((3-(((5-methoxy-3-methyl-1-benzothiophen-2-yl)sulphonyl)amino)-3-phenylpropanoyl)amino)-N-isopropyl-N-methylpropanamide;     -   (R,R)         N-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)benzyl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)-3-phenyl-N-(1-piperidylcarbonyl)propanamide;     -   (R,R)         2-((3-(4-chlorophenyl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide;     -   (R,R)         3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-2-((3-(((6-methoxy-2-naphthyl)sulphonyl)amino)-3-phenylpropanoyl)amino)-N,N-diethylpropanamide;     -   (R,R)         2-((3-(3-fluorophenyl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide;     -   (R,R)         2-((3-(1,3-benzodioxol-5-yl)-3-(((3-methyl-1-benzofur-2-yl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide;     -   (R,R)         2-((3-(1,3-benzodioxol-5-yl)-3-((2-naphthylsulphonyl)amino)propanoyl)amino)-3-(3-((tert-butyl(ethyl)amino)methyl)phenyl)-N-isopropyl-N-methylpropanamide;     -   (R,R)         3-(4-(7-azabicyclo[2.2.1]hept-7-ylmethyl)phenyl)-2-((3-(1,3-benzodioxol-5-yl)-3-(((6-methoxynaphthyl)sulphonyl)amino)propanoyl)amino)-N-isopropyl-N-methyl         propanamide;         and also the salts thereof with mineral or organic acids and/or         solvates thereof or hydrates thereof.

According to another of its aspects, the present invention relates to a process for preparing the compounds of formula (I), salts thereof and/or solvates thereof or hydrates thereof, characterized in that:

an acid or a functional derivative of this acid of formula:

in which R₂ and R₃ are as defined for a compound of formula (I), X represents either hydrogen or a group R₁—SO₂— in which R₁ is as defined for a compound of formula (I), or an N-protecting group, is reacted with a compound of formula:

in which Y represents either R₄ as defined for a compound of formula (I), or a (C₁–C₄)alkoxycarbonyl, and Z represents either R₅ as defined for a compound of formula (I), or a —CN group, on the condition that, when Y represents R₄ which represents a phenyl substituted with a group —CH₂NR₁₁R₁₂, Z represents R₅ which represents a group —CH₂NR₁₁R₁₂, R₁₁ and R₁₂ being as defined for a compound of formula (I); and

-   -   when X=R₁SO₂—, Y=R₄ and Z=R₅, the expected compound of         formula (I) is obtained;     -   or when X≠R₁SO₂ and/or Y≠R₄ and/or Z≠R₅, that is to say when at         least one of the X, Y and Z groups represents, respectively, X=H         or an N-protecting group, Y=(C₁–C₄)alkoxycarbonyl, Z=—CN, the         compound thus obtained of formula:

is subjected to one or more of the following steps:

-   -   when X represents an N-protecting group, this group is removed         and the compound thus obtained of formula:

is reacted with a sulphonyl halide of formula: R₁SO₂-Hal  (VI) in which Hal represents a halogen;

-   -   when Y represents a (C₁–C₄)alkoxycarbonyl, it is hydrolyzed and         the acid thus obtained or a functional derivative of this acid         of formula:

is reacted with a compound of formula: HNR₈R₉  (VIII); in which R₈ and R₉ are as defined for a compound of formula (I);

-   -   when Z represents a —CN group, this group is converted into R₅.

Optionally, the compound thus obtained is converted into one of the salts thereof with mineral or organic acids.

In the course of any of the steps of the process for preparing the compounds of formula (I) or of the intermediate compounds thereof of formula (II), (III), (IV), (V) or (VII), it may be necessary and/or desirable to protect the reactive or sensitive functional groups, such as the amine, hydroxyl or carboxyl groups, present on any of the molecules concerned. This protection may be carried out using the conventional protecting groups, such as those described in Protective Groups in Organic Chemistry, J. F. W. McOmie, Ed. Plenum Press, 1973 and in Protective Groups in Organic Synthesis, T. W. Greene and P. G. M. Wutts, published by John Wiley and Sons, 1991. The removal of the protecting groups may be carried out in a suitable subsequent step using the methods known to those skilled in the art, which do not affect the rest of the molecule concerned.

The N-protecting groups possibly used are the standard N-protecting groups that are well known to those skilled in the art, such as, for example, the tert-butoxycarbonyl, fluorenylmethoxycarbonyl, benzyl, trityl or benzyloxycarbonyl group.

The compounds of formula (I) or the compounds of formula (IV) may be prepared in the form of a mixture of isomers or in optically pure form. To obtain optically pure compounds, it is possible either to separate the isomers by known methods of organic chemistry, or to use optically pure compounds of formulae (II) and (III) as starting materials and then to perform, where appropriate, non-racemizing synthetic methods that are known per se.

In step a) of the process, the compounds of formula (I) or the compounds of formula (IV) are prepared using the standard methods of peptide chemistry, for example those described in The Peptides Ed. E. Gross and J. Meienhofer, Academic Press, 1979, 1, 65–104. Known methods make it possible to carry out peptide couplings without racemization of the carbon atoms of each constituent amino acid; furthermore, the β-substituted β-alanines for which the chiral carbon was not adjacent to the carboxyl group are renowned for not undergoing racemization (Ann. Rev. Biochem., 1986, 55, 855–878). Moreover, patent application EP 236 163 describes processes for conserving the chirality of each amino acid.

Thus, in step a) of the process according to the invention, the functional derivative of the acid (II) that may be used is a functional derivative that reacts with amines, such as an anhydride, a mixed anhydride, an acid chloride or an activated ester such as the 2,5-dioxopyrrolidin-1-yl ester, the p-nitrophenyl ester or the benzotriazol-1-yl ester.

When the 2,5-dioxopyrrolidin-1-yl ester of the acid (II) is used, the reaction with the amine (III) is carried out in a solvent such as N,N-dimethylformamide, in the presence of a base such as triethylamine or N-N-diisopropylthylamine, at a temperature of between 0° C. and room temperature.

When an acid chloride is used, the reaction is carried out in a solvent such as dichloromethane, in the presence of a base such as triethylamine, N-methylmorpholine or N,N-diisopropylthylamine, at a temperature of between −60° C. and room temperature.

When a mixed anhydride of the acid (II) is used, this anhydride is generated in situ by reacting a (C₁–C₄)alkyl chloroformate with the acid of formula (II) in a solvent such as dichloromethane, in the presence of a base such as triethylamine, at a temperature of between −70° C. and 50° C., and it is reacted with the amine of formula (III), in a solvent such as dichloromethane, in the presence of a base such as triethylamine and at a temperature of between 0° C. and room temperature.

When the acid of formula (II) itself is used, the process is performed in the presence of a coupling agent used in peptide chemistry, such as 1,3-dicyclohexylcarbodiimide or benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate or benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium tetrafluoroborate in the presence of a base such as triethylamine, N,N-diisopropylethylamine or N-ethylmorpholine, in a solvent such as dichloromethane, acetonitrile or N,N-dimethylformamide, or a mixture of these solvents, at a temperature of between 0° C. and room temperature.

Either a compound of formula (I) is thus obtained directly, or a compound of formula (IV) is thus obtained in which at least one of the groups X, Y and Z represents, respectively: X=N-protecting group, Y=(C₁–C₄)alkoxycarbonyl, Z=—CN, which is converted in one or more reactions, by standard methods well known to those skilled in the art, into a compound of formula (I). It is understood that, when several reactions are needed to convert a compound of formula (IV) into a compound of formula (I), the order of these reactions is determined so as not to affect the other substituents of the molecule concerned.

When, in the compound of formula (IV), X represents an N-protecting group, this group is removed according to the methods known to those skilled in the art. For example, when X represents a tert-butoxycarbonyl group, it is removed by the action of an acid such as hydrochloric acid or trifluoroacetic acid, for example, in a solvent such as methanol, ethyl ether, dioxane, tetrahydrofuran or dichloromethane, at a temperature of between 0° C. and room temperature. Next, the amine of formula (V) thus obtained is reacted with a sulphonyl halide of formula (VI) (preferably a chloride), in the presence of a base such as an alkali metal hydroxide (for example sodium hydroxide or potassium hydroxide) or an organic base (for example triethylamine, diisopropylethylamine or N-methylmorpholine), in a solvent such as dioxane, dichloromethane or acetonitrile, in the presence or absence of an activator such as dimethylaminopyridine (DMAP); the reaction may also be carried out in pyridine in the presence or absence of DMAP. The reaction is carried out at a temperature of between 0° C. and room temperature.

Either a compound of formula (I) is obtained, or a compound of formula (IV) is obtained in which X=R₁SO₂—.

When, in the compound of formula (IV), Y represents a (C₁–C₄)alkoxycarbonyl, it is hydrolyzed in acidic or basic medium according to the methods known to those skilled in the art. Next, the acid of formula (VII) thus obtained is reacted with a compound of formula (VIII) under the conditions described previously for the use of a compound of formula (II). Either a compound of formula (I) is obtained, or a compound of formula (IV) is obtained in which R₄=—CONR₈R₉.

When, in the compound of formula (IV), Z represents a cyano group, this group is converted into a group R₅ according to the standard methods that are well known to those skilled in the art.

For example, reduction of the —CN group gives either a compound of formula (I) or a compound of formula (IV), in which R₅=—CH₂NH₂. This reduction may be carried out using hydrogen, in the presence of a catalyst such as Raney® nickel, in a solvent such as methanol, toluene, dioxane or a mixture of these solvents, mixed with aqueous ammonia, at a temperature of between room temperature and 50° C.

The —CN group can be converted into a group R₅=—CH₂NR₁₁R₁₂ according to Scheme 1 below.

In step a1 of Scheme 1, the reduction of the nitrile derivative of formula (IV) to an aldehyde of formula (IX) is carried out according to the methods known to those skilled in the art such as, for example, the method described in Synth. Commun., 1990, 20(3), 459–467. The method described in Farmaco, Ed. Sci., 1988, 43(7/8), 597–612 may also be used, on the condition that, in the compound of formula (IV), X is other than an N-protecting group that is labile in acidic medium.

Next, in step b1, a compound of formula (X) is reacted with the aldehyde of formula (IX) in the presence or absence of an acid such as acetic acid, in a solvent such as methanol, dichloromethane or 1,2-dichloroethane, to form in situ an intermediate imine which is chemically reduced using, for example, sodium cyanoborohydride, sodium triacetoxyborohydride or sodium borohydride.

The —CN group can also be converted into a group R₅ according to Scheme 2 below.

In step a2 of Scheme 2, the cyano group is reduced according to the methods described previously.

Next, in step b2, the amine thus obtained is converted into an alcohol of formula (XI) according to the methods known to those skilled in the art, for example by the action of sodium nitrite in aqueous medium, in a solvent such as dioxane and at a temperature of between room temperature and 110° C.

In step c2, the alcohol of formula (XI) is treated with methanesulphonyl chloride, in the presence of a base such as triethylamine, in a solvent such as dichloromethane and at a temperature of between 0° C. and the reflux point of the solvent. A compound of formula (XII) is thus obtained in which W=Cl or O—SO₂CH₃ depending on the operating conditions used.

In step d2, when a compound of formula (XII) in which W=Cl is used, the reaction is carried out with the compound of formula (X) in the presence of a base such as sodium hydride, in a solvent such as tetrahydrofuran, N,N-dimethylformamide, acetonitrile, toluene or 2-propanol and at a temperature of between room temperature and 100° C. When a compound of formula (XII) in which W=O—SO₂CH₃ is used, the reaction is carried out with a compound of formula (X) in the presence or absence of a base such as the triethylamine, in a solvent such as ethanol, N,N-dimethylformamide, acetonitrile or dichloromethane and at a temperature of between 0° C. and 100° C.

In step e2, the ester is reduced with a reducing agent such as NaBH₄ or LiAlH₄, for example.

A compound according to the invention of formula (I) in which R₅ represents a group —CH₂—N(O)—R₁₁R₁₂ is obtained from the analogous compound of formula (I) in which R₅ represents a group —CH₂—NR₁₁R₁₂, the other substituents being identical, and the reaction is carried out by the action of an oxidizing agent such as meta-chloroperbenzoic acid.

The compounds of formula (I) according to the invention are finally obtained.

The compounds of formula (I) thus obtained are isolated in the form of free base or in the form of salt, according to the standard techniques.

When the compounds of formula (I) are obtained in the form of free base, the salification is carried out by treatment with the chosen acid in an organic solvent. Treatment of the free base, dissolved, for example, in an ether such as diethyl ether or in an alcohol such as 2-propanol or methanol or in acetone or in dichloromethane or in ethyl acetate or in acetonitrile with a solution of the chosen acid in one of the abovementioned solvents, gives the corresponding salt, which is isolated according to the standard techniques.

Thus, the hydrochloride, the hydrobromide, the sulphate, the hydrogen sulphate, the dihydrogen phosphate, the methanesulphonate, the oxalate, the maleate, the succinate, the fumarate, the 2-naphthalenesulphonate, the benzenesulphonate or the para-toluenesulphonate, for example, is prepared.

At the end of the reaction, the compounds of formula (I) may be isolated in the form of one of the salts thereof, for example the chlorohydride; in this case, if it is necessary, the free base may be prepared by neutralizing the said salt with a mineral or organic base, such as sodium hydroxide or triethylamine or with an alkali metal carbonate or bicarbonate, such as sodium or potassium carbonate or bicarbonate.

The compounds of formula (VI) are known or prepared according to known methods. For example, 2,4-dichloro-3-methylbenzenesulphonyl chloride is prepared according to the process described in J. Am. Chem. Soc., 1940, 62, 511–512. 2-Quinolinesulphonyl chloride and 5,6,7,8-tetrahydronaphthalene-2-sulphonyl chloride are prepared according to the process described in WO 97/25315. 6-Methoxynaphthalene-2-sulphonyl chloride is prepared according to J. Org. Chem., 1992, 57, 2631–2641. 3-Methylbenzothienyl-2-sulphonyl chloride is prepared according to J. Het. Chem., 1988, 25, 639–641.

The compounds of formula (VIII) are known or prepared according to known methods.

The compounds of formula (X) are known or prepared according to known methods.

The compounds of formula (II), in which R₂ represents hydrogen or a (C₁–C₄)alkyl in racemic form or in the form of pure enantiomers, are known (Table 1) or prepared according to known methods such as those described in WO 97/25315.

TABLE I (II)

X R₃ References H

Eur. J. Med. Chem. Chim. Therap.,1992, 27 (9), 961–965 Boc

J. Med. Chem.,1997, 40 (26), 4308–4318 H

Bull. Soc. Chim. Fr.,1987, 6, 1079–1083 H

Biorg. Med. Chem.1994, 2 (9), 881 H

Eur. J. Med. Chem. Chim. Therap.,1992, 27 (9), 961–965

Bull. Soc. Chim. Fr.,1987 6, 1079–1083 H

Tetrahedron Lett.,1991, 32 (44), 6327–6328 H

Zh. Obshch. Khim.,1958, 28, 213–215 H

Chem. Heterocycl. Compd., (Engl.Transl.) 1969, 5, 453–456 H

J. American. Chem. Soc.,1957, 79, 4524–4527 H

Tetrahedron Lett.,2000, 41 (31), 5803–5806 H

WO 97/08145 H

WO 98/40055 H

WO 97/08145 H

Tetrahedron Lett.2000, 41, 5803–5806

The compounds of formula (II) in which R₃ represents hydrogen may be prepared by known methods. It is possible, for example, to use the process described in Scheme 3 below in which R′ represents a (C₁–C₄)alkyl and Pr represents an N-protecting group, for example a tert-butoxycarbonyl or fluorenylmethoxycarbonyl group.

In step a3 of Scheme 3, a compound of formula (XIII) is reacted with an acrylic acid ester of formula (XIV) to give a compound of formula (XV). The reaction is carried out in the presence of an acid such as acetic acid and at the reflux temperature of the reaction mixture.

In step b3, compound (XV) is reacted with a sulphonyl halide of formula (VI), in the presence of a base such as sodium hydroxide, potassium hydroxide or 4-dimethylaminopyridine, in a solvent such as dioxane or pyridine, and at a temperature of between room temperature and 60° C.

In step c3, the ester of formula (XVI) thus obtained is hydrolyzed, according to the methods known to those skilled in the art, to give the expected compound of formula (II) in which X=R₁SO₂—.

Alternatively, in step d3, the amino-ester of formula (XV) is protected according to the methods known to those skilled in the art, for example with a tert-butoxycarbonyl or fluorenylmethoxycarbonyl group.

In step e3, the ester of formula (XVII) thus obtained is hydrolyzed according to the known methods, to give the compound of formula (II) in which X represents a protecting group.

Alternatively, according to step f3, the ester of formula (XV) is hydrolyzed in acidic or basic medium to give a compound of formula (II).

The compounds of formula (III) in which Y represents a (C₁–C₄)alkoxycarbonyl or a group R₄=CONR₈R₉ and Z=—CN are known or prepared according to known methods such as those described in WO 97/25315, EP 0 614 911 or EP 0 236 164.

The other compounds of formula (III) in which Y represents R₄ and Z=—CN are prepared according to Scheme 4 below.

In step a4 of Scheme 4, the benzophenone imine is reacted with an amine of formula (XVIII) to give a compound of formula (XIX). The reaction is carried out in a solvent such as dichloromethane, chloroform or ethyl acetate, at a temperature of between room temperature and 50° C and in the presence or absence of a base such as triethylamine.

In step b4 the compound of formula (XIX) is treated with a strong base such as butyllithium, potassium tert-butoxide or lithium diisopropylamide to give a carbanion which is reacted with 4-(bromomethyl)benzonitrile.

The reaction is carried out in a solvent such as tetrahydrofuran, at a temperature of between −78° C. and room temperature. By treatment in acidic medium, the benzhydrylidene N-protecting group is removed to give an expected compound of formula (III).

Compounds of formula (XIX) may also be prepared according to the methods described in Bull. Soc. Chim. Fr., 1973, 2985, 2987, 2988, J. Am. Chem. Soc., 1982, 104 (3), 730 or Tetrahedron Lett., 1996, 1137.

The compounds of formula (XVIII) are known or prepared according to known methods. For example, compounds of formula (XVIII) may be prepared according to Scheme 5 below.

In step a5 of Scheme 5, a compound of formula (XX) is reacted with sodium azide to give a compound of formula (XXI). The reaction is carried out in a solvent such as dimethyl sulphoxide, at a temperature of between 0° C. and room temperature.

In step b5, the compound of formula (XXI) is reduced to a compound of formula (XVIII) according to the methods known to those skilled in the art.

The compounds of formula (XVIII) may also be prepared by reducing a nitrile of formula R₄CN, for example by the action of LiAlH₄.

The compounds of formula (III) in which Y represents a (C₁–C₄)alkoxycarbonyl and Z represents R₅ as defined for a compound of formula (I) are prepared according to Scheme 6 below in which R′ represents a (C₁–C₄)alkyl.

In step a6 of Scheme 6, a compound of formula (XXII) is reacted with α,α′-dibromo-p-xylene (XXIII) according to the method described in Tetrahedron Asymmetry, 1992, 3 (5), 637–650.

In step b6, the compound of formula (XXIV) thus obtained is reacted with a compound of formula (X) to give a compound of formula (XXV). The reaction is carried out in the presence of a base such as an alkali metal carbonate or bicarbonate (potassium carbonate, sodium carbonate or sodium bicarbonate), in a solvent such as N,N-dimethylformamide, acetonitrile, dichloromethane or toluene and at a temperature of between room temperature and 100° C.

In step c6, the N-protecting group is removed by the action of an acid such as, for example, hydrochloric acid.

The compounds of formula (III) in which Y represents R₄=CONR₈R₉ are also prepared according to Scheme 7 below in which R′ represents a (C₁–C₄)alkyl.

In step a7, the amine of a compound of formula (III) is protected with a tert-butoxycarbonyl group, and the ester thus obtained is then hydrolyzed according to the standard methods (step b7); the acid of formula (XXVII) thus obtained is then reacted with a compound of formula (VIII) according to the methods described previously (step c7) and the compound (XXVIII) obtained is deprotected in acidic medium (step d7).

The compounds of formula (III) in which Y represents R₄ and Z represents R₅ as defined for a compound of formula (I) are prepared according to Scheme 8 below.

In step a8 of Scheme 8, the compound of formula (XIX) is reacted with methyl 4-(bromomethyl)benzoate in the presence of a base such as potassium tert-butoxide or lithium diisopropylamide in a solvent such as tetrahydrofuran at a temperature of between −78° C. and room temperature. By treatment in acidic medium, the benzhydrylidene protecting group is removed.

In step b8, the amine of formula (XXIX) is protected by reaction with di-tert-butyl dicarbonate.

In step c8, the ester of formula (XXX) thus obtained is reduced to an alcohol of formula (XXXI). The reduction is carried out in the presence of an reducing agent such as lithium aluminium hydride, sodium borohydride or diisobutylaluminium hydride, in a solvent such as tetrahydrofuran or toluene, at a temperature of between −78° C. and room temperature.

The alcohol of formula (XXXI) is reacted in step d8 with methanesulphonyl chloride, in the presence of a base such as triethylamine, in a solvent such as dichloromethane or tetrahydrofuran and at a temperature of between 0° C. and the reflux point of the solvent.

In step e8, the compound of formula (XXXII) thus obtained is reacted with a compound of formula (X), in the presence or absence of a base such as triethylamine, in a solvent such as ethanol, N,N-dimethylformamide, acetonitrile, toluene or dichloromethane and at a temperature of between 0° C. and 100° C.

In step f8, the N-protecting group of the compound of formula (XXXIII) thus obtained is removed by treatment in acidic medium.

The compounds of formula (III) in which Y represents either a (C₁–C₄)alkoxycarbonyl, or R₄ which represents a group —CONR₈R₉, a heterocyclic radical or a phenyl which is unsubstituted or substituted with a group other than a group —CH₂NR₁₁R₁₂, and Z represents R₅=—CH₂NR₁₁R₁₂, may also be prepared according to Scheme 9 below:

In step a9 of Scheme 9, the amine of a compound of formula (III) is protected according to the conventional methods.

In step b9, the nitrile of formula (XXXIV) is reduced to an aldehyde of formula (XXXV) according to the method described in Synth. Commun., 1990, 20 (3), 459–467.

Next, in step c9, a compound of formula (X) is reacted with the aldehyde of formula (XXXV) in the presence or absence of an acid such as acetic acid, in a solvent such as methanol, dichloromethane or 1,2-dichloroethane to form in situ an imine intermediate which is chemically reduced using, for example, sodium cyanoborohydride, sodium triacetoxyborohydride or sodium borohydride.

Finally, in step d9, the N-protecting group of the compound of formula (XXXVI) is removed by treatment in acidic medium.

The amines of formula (X) are known or prepared according to known methods described below:

TABLE II HNR₁₁R₁₂ References

J. Pharm. Sci., 1963, 52, 1191

J. Org. Chem., 1979, 44 (5), 771–7

Chem. Pharm. Bull., 1993, 41 (11), 1971–1986

Chem. Pharm. Bull., 1993, 41 (11), 1971–1986

WO 98/22443

J. Org. Chem., 1970, 35 (11), 3663–3666

Synth. Commun., 1999, 29 (10), 1747–1756

J. Chem. Soc. Perkin Trans. 2, 1984, 737–744

U.S. Pat. No. 2424063

J. Org. Chem. USSR (Engl. Trans 1), 1992, 28(3.1), 374–380

Tetrahedron, 1999, 55 (31), 9439–9454

J. Amer. Chem. Soc., 1955, 77, 4100–4102

WO 95/22547

WO 94/03437

Chem. Ber., 1991, 791–801

A compound of formula (XXXV) may also be converted into a compound of formula (XXXVI) according to the following reaction scheme:

In step a9a, a reductive amination is carried out in the presence of a reducing agent such as NaHB(OAc)₃. Next, either an alkylation is performed with an alkyl halide, for example an iodide (step b9a), or a further reductive amination is performed by reacting a carbonyl derivative of formula R₁₂O (step c9a), R₁₂O representing a dialkyl ketone or an alkylaldehyde. Thus, for example, treating a compound (XXXVa), in which R₁₁ is cyclopropyl, with acetone gives a compound (XXXVI) in which R₁₁ is cyclopropyl and R₁₂ is isopropyl.

In the case where Y represents an alkoxycarbonyl group, a compound (III) in which Y represents a group CONR₈R₉ may be prepared according to Scheme 10 below:

The compounds of formula (III) in which Y represents a phenyl substituted with a group —CH₂NR₁₁R₁₂ and Z represents R₅=—CH₂NR₁₁R₁₂ are prepared according to Scheme 11 below:

Steps a11 and b11 are carried out according to the methods described in Scheme 5.

Step c11 is carried out according to the process described in step a4 of Scheme 4.

Steps d11 to i11 are carried out according to the processes described in steps a8 to f8 of Scheme 8.

The compounds of formula (III) in which R₄ represents a group COR₁₃ may be prepared according to the scheme below.

In step a12, N,O-dimethylhydroxylamine hydrochloride is reacted in the presence of a coupling agent, and in step b12, the lithiated derivative of the compound R₁₃H, prepared by the action of butyllithium on the compound R₁₃H, is added. The process is then performed according to steps b9, c9 and d9 of Scheme 9 to give a compound of formula (III) from the compound of formula (XXXXI).

The compounds of formula (III) in which R₄ represents a group CSNR₈R₉ are prepared by the action of Lawesson's reagent on an analogous compound of formula (III) in which R₄ represents a group CONR₈R₉ and the other substituents are identical (Tetrahedron, 1985, 41 (22), 5061–5087).

The optically pure compounds of formula (III) may be prepared by resolving the racemic mixtures by standard methods such as the method using optically active agents or enzymes. For example, when, in a compound of formula (III), Y represents a group —CONR₈R₉ or a (C₁–C₄)alkoxycarbonyl and Z=CN, the methods described in WO 97/25315 may be used; when, in a compound of formula (III), Y represents a pyridyl and Z=CN, the methods described in Tetrahedron, 1995, 51/46, 12731–12744 or in Synthesis, 1996, N° 8, 991–996 may be used.

Among the compounds of formulae (II) and (III), some are novel and constitute a further aspect of the invention.

The compounds of formula:

in which:

-   -   X represents hydrogen or an N-protecting group;         -   R₃ represents a heterocyclic radical chosen from:             (2,2-difluoro)benzo[1,3]dioxol-5-yl, 3-isopropylphenyl,             3-trifluoromethoxyphenyl, 2,1,3-benzoxadiazol-5-yl,             benzothiophen-5-yl, 1-benzofur-6-yl, 1-benzofur-4-yl,             1-benzofur-3-methyl-5-yl, 2,3-dihydrobenzofur-4-yl;             and also the salts thereof with mineral or organic acids, in             racemic form or in the form of pure enantiomers;             are novel and constitute a further aspect of the present             invention.

The compounds of formula:

in which:

-   -   R₁ represents a phenylvinyl; a heterocycle chosen from quinolyl,         1-benzofur-2-yl, 2,1,3-benzoxadiazol-4-yl,         2,1,3-benzothiadiazol-4-yl, 1,3-benzothiazol-2-yl,         1-benzothiophen-2-yl, 1H-pyrazol-4-yl, thien-2-yl,         5-isoxazolthien-2-yl, benzothien-2-yl, thieno[3,2-c]pyrid-2-yl;         naphtho[2,3-d][1,3]dioxol-6-yl; the said heterocycles being         unsubstituted or substituted one or more times with R₆, which         may be identical or different;     -   R₂ represents hydrogen or a (C₁–C₄)alkyl and R₃ represents a         phenyl which is unsubstituted or substituted one or more times         with R₇, which may be identical or different; a heterocyclic         radical chosen from benzo[1,3]dioxol-5-yl which is unsubstituted         or substituted in position −2 with two fluorine atoms;         2,1,3-benzothiadiazol-5-yl; 2,1,3-benzoxadiazol-5-yl;         benzothiophen-5-yl; 2,3-dihydrobenzo[1,4]dioxin-6-yl;         1-benzofur-2-yl; 1-benzofur-5-yl; 1-benzofur-6-yl;         1-benzofur-4-yl; 1-benzofur-3-methyl-5-yl;         2,3-dihydrobenzofur-4-yl; 1,3-thiazol-2-yl; furyl; thien-2-yl;         thien-3-yl;     -   or R₂ represents a phenyl which is unsubstituted or substituted         one or more times with R₆, which may be identical or different;         a benzo[1,3]dioxol-5-yl; a pyridyl; an indanyl; and R₃         represents hydrogen;     -   R₆ represents a halogen atom; a (C₁–C₄)alkyl group; a         trifluoromethyl group; a (C₁–C₄)alkoxy group; a 2-fluoroethoxy         group; a trifluoromethoxy, methylenedioxy or         difluoromethylenedioxy group;     -   R₇ represents a halogen atom; a (C₁–C₄)alkyl group; a phenyl         group; a trifluoromethyl group; a (C₁–C₄)alkoxy group; a         benzyloxy group; a trifluoromethoxy group;         and also the salts thereof with mineral or organic acids, in         racemic form or in the form of pure enantiomers, are novel and         form part of the invention.

The compounds of formula:

in which:

-   -   R₄ represents a group —CONR₈R₉; a group CSNR₈R₉; a group COR₁₃;         a phenyl which is unsubstituted or substituted one or more times         with R₁₀; a heterocyclic radical chosen from pyridyl,         imidazolyl, furyl, benzimidazolyl, benzothiazol-2-yl and         benzo[1,3]dioxol-5-yl, the said radicals being unsubstituted or         substituted with a methyl;     -   R₅ represents a group —CH₂NR₁₁R₁₂ or —CH₂N(O)R₁₁R₁₂;     -   R₈ and R₉ each independently represent hydrogen; a (C₁–C₄)alkyl         group; a (C₃–C₇)cycloalkyl group; a         (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an         ω-(C₁–C₄)dialkylamino(C₂–C₄)alkyl group;     -   or R₈ and R₉, together with the nitrogen atom to which they are         attached, constitute a heterocyclic radical chosen from         pyrrolidinyl, piperidyl, morpholin-4-yl, thiomorpholin-4-yl,         piperazin-1-yl, 4-methylpiperazin-1-yl, 4-methylpiperid-1-yl,         2-methylpiperid-1-yl, 4,4-dimethylpiperid-1-yl,         4,4-difluoropiperid-1-yl, 4-trifluoromethylpiperid-1-yl,         4-methoxypiperid-1-yl, 3,4-dihydropiperid-1-yl, azepin-1-yl and         cyclohexyl-spiro-4-piperid-1-yl;     -   R₁₀ represents a halogen atom; a (C₁–C₄)alkyl group; a hydroxyl         group; a (C₁–C₆)alkoxy group; R₁₀ can also represent a group         —CH₂NR₁₁R₁₂ when R₅ represents a group —CH₂NR₁₁R₁₂, the said         groups then being identical;     -   R₁₁ and R₁₂ each independently represent hydrogen; a         (C₁–C₆)alkyl group; a (C₂–C₄)alkenyl group; a (C₃–C₇)cycloalkyl         group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an         ω-hydroxy(C₂–C₄)alkylene group; an ω-methoxy(C₂–C₄)alkylene         group; an ω-trifluoromethyl(C₂–C₄)alkylene group; an         ω-halo(C₂–C₄)alkylene group;     -   or R₁₁ and R₁₂, together with the nitrogen atom to which they         are attached, constitute a monocylic or bicyclic heterocyclic         radical chosen from azetidinyl, pyrrolidinyl, morpholin-4-yl,         thiomorpholin-4-yl, piperid-1-yl, piperazin-1-yl,         1,2,3,6-tetrahydropyrid-1-yl, 2,3,4,5-tetrahydropyridinium,         decahydroquinolyl, decahydroisoquinolyl, tetrahydroisoquinolyl,         octahydro-1H-isoindolyl, (C₄–C₆)cycloalkyl-spiro-piperidyl,         3-azabicyclo[3.1.0]hexyl and 7-azabicyclo[2.2.1]heptan-7-yl,         which is unsubstituted or substituted one or more times with a         halogen atom or a (C₁–C₄)alkyl, hydroxyl, (C₁–C₄)alkoxy,         trifluoromethyl or difluoromethylene group;     -   R₁₃ represents a phenyl, thiazol-2-yl or pyridyl group;         and also the salts thereof with mineral or organic acids, in the         form of racemic mixtures or of pure enantiomers, are novel and         form part of the invention.

The affinity of the compounds according to the invention for the bradykinin B₁ receptors was measured on MRC5 cell membrane suspensions using a technique similar to the one described by K. H. Schneck et al., in Eur. J. Pharmacol., 1994, 266, 277–282. In this test, the affinity of [des-Arg⁹] bradykinin is between 10⁻⁶M and 10⁻⁷M, that of [des-Arg¹⁰]kallidin is 2×10⁻⁹M; and the compounds of the invention show affinity ranging up to 10⁻⁹M.

The affinity is expressed in terms of IC₅₀, the IC₅₀ being the concentration that inhibits 50% of the specific binding of the [des-Arg¹⁰]kallidin-tritiated ligand to the MRC5 cell receptors.

The affinity of the compounds according to the invention for the bradykinin B₂ receptors was measured on MRC5 cell membrane suspensions according to a technique similar to the one described by D. G. Sawutz et al., in Eur. J. Pharmacol., 1992, 227, 309–315. In this test, the affinity of the bradykinin, expressed in terms of IC₅₀, is in the region of 10⁻⁹ M, whereas the compounds of the invention show no affinity for the bradykinin B₂ receptors at a concentration of 10⁻⁶ M.

The antagonistic effect of the compounds according to the invention was measured in vitro by inhibition of the contraction of rabbit thoracic aorta induced by the administration of [des-Arg⁹]bradykinin, after a preincubation of the tissue for 20 hours in Krebs buffer saturated with CO₂/O₂ mixture, according to an adaptation of the technique described by L. Levesque et al. Br. J. Pharmacol., 1993, 109, 1254–1262.

The antagonistic effect of the compounds according to the invention was also measured on the release of [³H]inositol phosphate by MRC5 fibroblasts in culture: after incorporation of [³H]myoinositol for 48 hours, according to the technique described by F. Oury Donat et al., J. Neurochem., 1994, 62, (4), 1399–1407. The antagonistic effect is expressed as the percentage of inhibition of the release of [³H]inositol phosphate induced by [des-Arg¹⁰]kallidin at 10⁻⁸ M, on MRC5 fibroblasts preincubated for 4 hours in the presence of IL₁β at 0.5 μg/ml.

The intestinal absorption of the compounds according to the invention was studied in vitro on the model of CACO-2 cell monolayer, according to an adaptation of the technique described by T. Lindmark et al., J. Pharmacol. Exp. Therap., 1995, 275 (2), 958–964.

Moreover, several compounds according to the invention were studied in vivo on animal models.

The antinociceptive effect was checked on a model of neuropathic pain in rats after administration of a compound according to the invention at a dose of 30 mg/kg orally (according to the protocol described in Pain, 2000, 86, 265–271).

It has been observed that a compound according to the invention, at a dose of from 1 to 30 mg/kg orally, inhibits the late phase of nociception induced with formalin in mice (Pain, 1987, 203–114); this is the sign of an action on inflammatory pain.

A model of thermal hyperalgia induced by UV irradiation in rats (Brit. Med. J., 1993, 110, 1441–1444) demonstrated the anti-hyperalgic effects of a compound according to the invention at a dose of from 1 to 3 mg/kg orally.

The compounds according to the invention may be useful for treating or preventing many pathologies, in particular inflammation pathologies, persistent or chronic inflammatory diseases (Drug News and Perspectives, 1994, 10 (7), 603–611), neurogenic inflammation, pain (Brit. J. Pharmacol., 1993, 110, 193–198), chronic pains, neuropathies, septic shock, burns (Pain, 1993, 53, 191–197), wounds, diseases of the respiratory pathways, asthma, systemic inflammatory response syndrome, oedema (Brit. J. Pharmacol., 1995, 114, 1005–1013), cerebral oedema, angiogenesis (Brit. J. Pharmacol., 1993, 109, 14–17), type I infectious diabetes (Abst. 14th Intern. Symp. on Kinins, C49, Denver Colo., 10–15 Sep. 1995), diabetic vasculopathy, ventricular hypertrophy, pulmonary fibrosis and systemic progressive sclerosis.

Mention may be made, for example, of:

-   -   inflammation, osteal pain, muscular pain, articular pain, facial         pain, fibromyalgia, hyperalgia, pain associated with cancer,         perioperative pain, menstrual pain, headaches, dental pain,         gynaecological pain, migraines;     -   hyperactivity of the respiratory pathways in asthma, atopic or         non-atopic asthma, allergic or non-allergic asthma, bronchitis,         pneumoconiosis, chronic obstructive diseases of the respiratory         pathways, pleurisy, chronic obstructive pulmonary diseases,         rhinitis of viral or allergic origin;     -   post-capillary resistance, diabetes, diabetic vasculopathy,         diabetic symptoms associated with insulitis (for example:         hyperglycaemia, diuresis, proteinuria);     -   septic shock;     -   Alzheimer's disease, cranial trauma;     -   arthritis, rheumatoid arthritis, inflammatory diseases of the         joints, atherosclerosis, multiple sclerosis;     -   diseases of the digestive system, diseases of the urinary         system, cystitis, pancreatitis, nephritis, enterocolitis,         ulcerative colitis, irritable bowel syndrome, Crohn's disease,         liver diseases;     -   pathologies of the ocular system, uveitis, retinitis, glaucoma;     -   skin diseases such as atopic diseases, eczema, psoriasis,         dermatitis, itching;     -   hair loss.

Moreover, the compounds of the invention are useful for their antiproliferative effect on cancer cells; their action on neurodegenerative diseases, myelin degeneration, degenerative diseases of viral origin; their cardioprotective effect.

Furthermore, the compounds of the invention are useful as myorelaxants, relaxants of smooth muscles, of spasms of the gastrointestinal tract and the uterus.

More generally, the compounds according to the invention may be useful for treating or preventing any pathology in which bradykinin plays a fundamental role, which are denoted hereinbelow as bradykinin-dependent pathologies.

The compounds of the present invention are especially active principles of pharmaceutical compositions, the toxicity of which is compatible with their use as medicinal products.

The compounds of formula (I) above may be used at daily doses of from 0.01 to 100 mg per kilo of body weight of the mammal to be treated, preferably at daily doses of from 0.1 to 50 mg/kg. In man, the dose may preferably range from 0.5 to 4000 mg per day and more particularly from 2.5 to 1000 mg depending on the age of the individual to be treated or the type of treatment: prophylactic or curative.

For their use as medicinal products, the compounds of formula (I) are generally administered in dosage units. The said dosage units are preferably formulated in pharmaceutical compositions in which the active principle is mixed with a pharmaceutical excipient.

Thus, according to another of its aspects, the present invention relates to pharmaceutical compositions containing, as active principle, a compound of formula (I) or a pharmaceutically acceptable salt and/or solvate or hydrate thereof.

In the pharmaceutical compositions of the present invention for oral, sublingual, inhaled, subcutaneous, intramuscular, intravenous, transdermal, local or rectal administration, the active principles may be administered in unit administration forms, as a mixture with standard pharmaceutical supports, to animals and to man. The appropriate unit administration forms comprise oral forms such as tablets, gel capsules, powders, granules and oral solutions or suspensions, sublingual and buccal administration forms, aerosols, topical administration forms, implants, subcutaneous, intramuscular, intravenous, intranasal or intraocular administration forms and rectal administration forms.

When a solid composition in the form of tablets is prepared, the active principle, micronized or non-micronized, is mixed with a pharmaceutical vehicle which may be composed of diluents such as, for example, lactose, microcrystalline cellulose, starch and formulation adjuvants, for instance binders (polyvinylpyrrolidone, hydroxypropylmethylcellulose, etc.), glidants, for instance silica, and lubricants, for instance magnesium stearate, stearic acid, glyceryl tribehenate or sodium stearylfumarate.

Wetting agents or surfactants such as sodium lauryl sulphate may be added to the formulation.

The tablets may be prepared by various techniques: direct tabletting, dry granulation, wet granulation or hot-melt granulation.

The tablets may be uncoated or sugar-coated (for example with sucrose) or coated with various polymers or other suitable materials.

The tablets may have a flash, delayed or sustained release by preparing polymer matrices or by using specific polymers in film coating.

A preparation as a gel capsule is obtained by simple mixing of the active principle with dry pharmaceutical vehicles (simple mixing or dry, wet or hot-melt granulation) or liquid or semi-solid pharmaceutical vehicles.

The gel capsules may be soft or hard, and film-coated or otherwise, so as to have a flash, sustained or delayed activity (for example via an enteric form).

A preparation in the form of a syrup or elixir may contain the active principle together with a sweetener, preferably a calorie-free sweetener, methylparaben and propylparaben as antiseptic, and also a flavouring and a suitable dye.

The water-dispersible powders or granules may contain the active principle as a mixture with dispersants, wetting agents or suspending agents, for instance polyvinylpyrrolidone, and also with sweeteners or flavour enhancers.

For rectal administration, use is made of suppositories which are prepared with binders that melt at the rectal temperature, for example cocoa butter or polyethylene glycols.

Aqueous suspensions, isotonic saline solutions or sterile injectable solutions containing pharmacologically acceptable dispersants and/or solubilizing agents, for example propylene glycol or butylene glycol, are used for parenteral, intranasal or intraocular administration.

Thus, to prepare an aqueous solution for intravenous injection, a cosolvent such as, for example, an alcohol such as ethanol or a glycol such as polyethylene glycol or propylene glycol, and a hydrophilic surfactant such as Tween® 80, may be used. To prepare an oily solution for intramuscular injection, the active principle may be dissolved with a triglyceride or a glycerol ester.

Creams, ointments, gels or eye drops may be used for local administration.

Patches in multilayer or reservoir form in which the active principle may be in an alcoholic solution may be used for transdermal administration.

For administration by inhalation, an aerosol containing, for example, sorbitan trioleate or oleic acid and also trichlorofluoromethane, dichlorofluoromethane, dichlorotetrafluoroethane or any other biologically compatible propellent gas is used; a system containing the active principle alone or combined with an excipient, in powder form, may also be used.

The active principle may also be in complex form with a cyclodextrin, for example α, β or γ-cyclodextrin, 2-hydroxypropyl-β-cyclodextrin or methyl-β-cyclodextrin.

The active principle may also be formulated in the form of microcapsules or microspheres, optionally with one or more supports or additives.

Among the sustained-release forms that are useful in the case of chronic treatment, implants may be used. These may be prepared in the form of an oily suspension or in the form of a suspension of microspheres in an isotonic medium.

In each dosage unit, the active principle of formula (I) is present in amounts that are adapted to the daily doses envisaged. In general, each dosage unit is suitably adjusted according to the dosage and the intended type of administration, for example tablets, gel capsules and the like, sachets, ampules, syrups and the like, or drops, such that such a dosage unit contains from 0.5 to 1000 mg of active principle and preferably from 2.5 to 250 mg needing to be administered one to four times a day.

The compositions of the present invention may contain, along with the compounds of formula (I) above or a pharmaceutically acceptable salt and/or solvate or hydrate thereof, other active principles which may be useful in the treatment of the complaints or diseases mentioned above. For example, a pharmaceutical composition according to the present invention may contain a bradykinin B₂ receptor antagonist combined with a compound according to the present invention.

According to another of its aspects, the present invention relates to the use of the compounds of formula (I), or a pharmaceutically acceptable salt and/or solvate or hydrate thereof, for the preparation of medicinal products intended for treating any pathology in which bradykinin and B₁ receptors are involved.

According to another of its aspects, the present invention relates to the use of the compounds of formula (I), or a pharmaceutically acceptable salt and/or solvate or hydrate thereof, for the preparation of medicinal products intended for treating inflammation pathologies and persistent or chronic inflammatory diseases.

In the Preparations and the Examples, the following abbreviations are used:

-   ether: diethyl ether -   iso ether: diisopropyl ether -   DCM: dichloromethane -   DMF: N,N-dimethylformamide -   DMSO: dimethyl sulphoxide -   EtOAc: ethyl acetate -   THF: tetrahydrofaran -   AcOH: acetic acid -   TFA: trifluoroacetic acid -   TEA: triethylamine -   DIPEA: diisopropylethylamine -   DMAP: 4-dimethylaminopyridine -   DCE: dichloroethane -   DCC: 1,3-dicyclohexylcarbodiimide -   DCU: dicyclohexylurea -   TBTU: O-(1H-benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium     tetrafluoroborate -   Boc: tert-butoxycarbonyl -   (Boc)₂O: di-tert-butyl dicarbonate -   Penicillin amidase sold by Sigma -   Alcalase sold by Novo -   Sephadex® LH 20: sold by Pharmacia -   BOP: benzotriazol-1-yloxytris(dimethylamino) phosphonium     hexafluorophosphate -   TBTU: benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium     tetrafluoroborate -   KHSO₄/K₂SO₄ buffer: solution of 16.66 g of KHSO₄ and 32.32 g of     K₂SO₄ in 1 liter of water -   Hydrochloric ether: saturated solution of HCl gas in diethyl ether -   m.p.: melting point -   RT: room temperature

Except where otherwise mentioned, the proton nuclear magnetic resonance (NMR) spectra are recorded at 200 MHz in DMSO-d₆ optionally containing TFA, and the reference is placed on the DMSO which is at 2.50 ppm from tetramethylsilane. The chemical shifts δ are indicated in ppm.

s: singlet; bs: broad singlet; ds: doubled singlet; d: doublet; bd: broad doublet; dd: doubled doublet: t: triplet; q: quartet; qt: quintet; mt: multiplet; unres.: unresolved peak; sept.: septet.

When only the NMR indication appears in the present description, this means that the NMR spectrum recorded under the above conditions is in accordance with the expected structure.

The mass spectra indicate the value MH⁺.

PREPARATIONS Preparation 1.1 3-(Naphthalene-2-sulphonylamino)-3-phenylpropionic acid

4.13 g of 3-amino-3-phenylpropionic acid are dissolved in a mixture of 100 ml of dioxane and 25 ml of 1N NaOH, 5.6 g of 2-naphthalenesulphonyl chloride are added portionwise while maintaining a pH of 10.5–10.8 by addition of 1N NaOH, and the mixture is stirred for 2 hours at RT. The reaction mixture is diluted by adding 400 ml of water, acidified to pH 2 by adding 2N HCl, and extracted with EtOAc, the organic phase is washed with KHSO₄/K₂SO₄ buffer solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 7.33 g of the expected product are obtained after triturating in heptane and drying under vacuum; m.p.=126–129° C.

NMR: δ (ppm): 2.55–2.70: mt: 2H; 4.70: t: 1H; 6.85–8.15: unres.: 12H.

Preparation 1.2 3-[Methyl(naphthalene-2-sulphonyl)amino]-3-phenylpropionic acid

A) 3-(tert-Butoxycarbonylamino)-3-phenylpropionic acid

8.3 ml of triethylamine are added to a mixture of 8.3 g of 3-amino-3-phenylpropionic acid in 35 ml of water and 5 ml of dioxane, followed by addition, over 30 minutes, of a solution of 12.8 g of di-tert-butyl dicarbonate in 25 ml of dioxane, and the mixture is stirred overnight at RT. The reaction mixture is diluted with water, the aqueous phase is washed with ether and acidified to pH 2.5 by adding 2N HCl, and extracted with EtOAc, the organic phase is washed with water, with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 12.4 g of the expected product are obtained.

B) 3-(N-tert-Butoxycarbonylmethylamino)-3-phenylpropionic acid

0.27 g of 80% sodium hydride in oil is added portionwise to a mixture of 0.795 g of the compound obtained in the preceding step and 0.62 ml of methyl iodide in 10 ml of THF, and the mixture is stirred overnight at RT. The reaction mixture is diluted with EtOAc, water is added and the mixture is acidified to pH 2 by adding 1N HCl. After separation of the phases by settling, the organic phase is washed with water, with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.82 g of the expected product is obtained.

C) 3-(Methylamino)-3-phenylpropionyl trifluoroacetate

A mixture of 0.81 g of the compound obtained in the preceding step and 12 ml of TFA in 10 ml of DCM is stirred for 55 minutes at RT. The reaction mixture is concentrated under vacuum, the residue is taken up in DCM and the solvent is evaporated off under vacuum. The residue is dissolved in ether, heptane is added to the point of precipitation, the solvent is decanted off and the gum obtained is dried. 0.86 g of the expected product is obtained in the form of a foam.

D) 3-[Methyl(naphthalene-2-sulphonyl)amino]-3-phenylpropionic acid

5 ml of 1N NaOH are added to a mixture of 0.85 g of the compound obtained in the preceding step in 5 ml of dioxane, followed by portionwise addition of 0.698 g of 2-naphthalenesulphonyl chloride, while keeping the pH at 10–11 by adding 1N NaOH, and the mixture is stirred for 2 hours at RT. The reaction mixture is diluted with water, the aqueous phase is washed with ether and acidified to pH 2 by adding 1N HCl, and extracted with EtOAc, the organic phase is washed with water, with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.65 g of the expected product is obtained in the form of a wax.

Preparation 1.3 3-(3-Methylphenyl)-3-(naphthalene-2-sulphonylamino)propionic acid

A) 3-Amino-3-(3-methylphenyl)propionic acid

11.8 ml of 3-methylbenzaldehyde are added to a mixture of 10.4 g of malonic acid and 15.4 g of ammonium acetate in 150 ml of 2-methoxyethanol, and the mixture is heated overnight at 80° C. After cooling to RT, the precipitate formed is filtered off under suction, washed with ether and dried. 6.8 g of the expected product are obtained.

NMR: δ (ppm): 2.25: s: 3H; 2.80 to 3.05: mt: 2H; 4,55: t: 1H; 7.10 to 7.30: unres.: 4H.

B) 3-(3-Methylphenyl)-3-(naphthalene-2-sulphonylamino)propionic acid

10 ml of 1N NaOH are added to a suspension of 1.79 g of the compound obtained in the preceding step in 25 ml of dioxane, followed by portionwise addition of 2.26 g of 2-naphthalenesulphonyl chloride, while keeping the pH at 10.5–12 by adding 1N NaOH, and the mixture is stirred for 2 hours at RT. The reaction mixture is diluted with water, the aqueous phase is washed with EtOAc and acidified to pH 1 by adding 6N HCl, and extracted with EtOAc, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 3.37 g of the expected product are obtained after crystallization from heptane.

Preparation 1.4 3-(3,4-Dimethylphenyl)-3-(naphthalene-2-sulphonylamino)propionic acid

A) 3-Amino-3-(3,4-dimethylphenyl)propionic acid hydrochloride

A mixture of 5 g of 3,4-dimethylbenzaldehyde, 3.88 g of malonic acid and 5.74 g of ammonium acetate in 50 ml of EtOH is refluxed for 5 hours. After cooling to RT, the precipitate formed is filtered off by suction and washed with EtOH. The precipitate is taken up in a DCM/1N HCl mixture, the insoluble material is filtered off, the filtrate is decanted and the acidic aqueous phase is concentrated under vacuum up to the start of precipitation and cooled to 0° C., and the precipitate formed is filtered off by suction. The precipitate is taken up in a DCM/MeOH mixture (6/4; v/v) and dried over Na₂SO₄, and the solvents are evaporated off under vacuum. The residue is taken up in ether and the precipitate formed is filtered off by suction after trituration. 3.01 g of the expected product are obtained; m.p.=192° C. (dec.).

B) 3-(3,4-Dimethylphenyl)-3-(naphthalene-2-sulphonylamino)propionic acid

A solution of 1.98 g of 2-naphthalenesulphonyl chloride in 15 ml of dioxane is added dropwise to a mixture of 2 g of the compound obtained in the preceding step and 17.4 ml of 1N NaOH in 20 ml of dioxane, and the mixture is stirred overnight at RT. The reaction mixture is neutralized to pH 7 by adding 1N HCl and concentrated under vacuum. The residue is taken up in an EtOAc/saturated NaHCO₃ mixture, the precipitate formed is filtered off by suction and taken up in a DCM/1N HCl mixture, the organic phase is dried over Na₂SO₄ after separation of the phases by settling, and the solvent is evaporated off under vacuum. 1.66 g of the expected product are obtained; m.p.=122° C. (dec.).

Preparation 1.5 3-(3,5-Dimethoxyphenyl)-3-(naphthalene-2-sulphonylamino)propionic acid

A) 3-Amino-3-(3,5-dimethoxyphenyl)propionic acid

A mixture of 5 g of 3,5-dimethoxybenzaldehyde, 3.13 g of malonic acid and 4.64 g of ammonium acetate in 50 ml of EtOH is refluxed for 5 hours. The reaction mixture is concentrated under vacuum, the residue is taken up in water, insoluble material is filtered off, the filtrate is washed with DCM and the aqueous phase is concentrated under vacuum. The residue is taken up in water and concentrated under vacuum again. The residue is taken up in EtOH and the solvent is evaporated off under vacuum. 2.96 g of the expected product are obtained.

B) 3-(3,5-Dimethoxyphenyl)-3-(naphthalene-2-sulphonylamino)propionic acid

1.01 g of 2-naphthalenesulphonyl chloride are added portionwise to a mixture of 1 g of the compound obtained in the preceding step and 4.5 ml of 1N NaOH in 15 ml of dioxane, and the mixture is stirred overnight at RT. The reaction mixture is diluted with water and washed with EtOAc, the aqueous phase is acidified to pH 1 by adding concentrated HCl, and extracted with ether, the organic phase is washed with 1N HCl and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 1.41 g of the expected product are obtained; m.p.=190° C.

Preparation 1.6 3-(3,4-Dimethoxyphenyl)-3-(naphthalene-2-sulphonylamino)propionic acid

A) 3-Amino-3-(3,4-dimethoxyphenyl)propionic acid, hydrochloride

A mixture of 5 g of 3,4-dimethoxybenzaldehyde, 3.131 g of malonic acid and 4.64 g of ammonium acetate in 50 ml of EtOH is refluxed for 5 hours. After cooling to RT, the precipitate formed is filtered off by suction. The precipitate is taken up in water, acidified to pH 2 by adding 1N HCl, and the aqueous phase is washed with DCM and concentrated under vacuum. The residue is taken up in water and concentrated again under vacuum. The residue is taken up in EtOH and evaporated under vacuum. 2.99 g of the expected product are obtained.

B) 3-(3,4-Dimethoxyphenyl)-3-(naphthalene-2-sulphonylamino)propionic acid

This compound is prepared according to the procedure described in step B) of preparation 1.5, starting with 1 g of the compound obtained in the preceding step and 7.65 ml of 1N NaOH in 15 ml of dioxane. 1.33 g of the expected product are obtained.

Preparation 1.7 3-(Benzo[1,3]dioxol-5-yl)-3-(naphthalene-2-sulphonylamino)propionic acid

A) 3-Amino-3-(benzo[1,3]dioxol-5-yl)propionic acid

This compound is prepared according to the procedure described in Biorg. Med. Chem., 1994, 2 (9), 881.

B) 3-(Benzo[1,3]dioxol-5-yl)-3-(naphthalene-2-sulphonylamino)propionic acid

1N NaOH is added to a suspension of 2.16 g of the compound obtained in the preceding step in 40 ml of dioxane, until the pH=11.8, followed by portionwise addition of 2.33 g of 2-naphthalenesulphonyl chloride, and the mixture is stirred for 2 hours at RT while keeping the pH at 10.5–11.5 by adding 1N NaOH. The reaction mixture is diluted with an equal volume of water and washed with EtOAc, the aqueous phase is acidified to pH 1.5 by adding 6N HCl, and extracted with EtOAc, the organic phase is washed with KHSO₄/K₂SO₄ buffer, with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 3.9 g of the expected product are obtained after crystallization from heptane; m.p.=173–175° C.

NMR: δ (ppm): 2.45–2.60: mt: 2H; 4.65: q: 1H; 5.40–5.70: mt: 2H; 6.45–6.65: mt: 3H; 7.55–7.75: mt: 3H; 7.90–8.10: mt: 4H; 8.35: bd: 1H.

Preparation 1.8 3-(2,3-Dihydrobenzo[1,4]dioxin-6-yl)-3-(naphthalene-2-sulphonylamino)propionic acid

A) 3-Amino-3-(2,3-dihydrobenzo[1,4]dioxin-6-yl)propionic acid

A mixture of 5 g of 2,3-dihydrobenzo[1,4]dioxine-6-carbaldehyde, 3.17 g of malonic acid and 4.69 g of ammonium acetate in 50 ml of EtOH is refluxed for 5 hours. The reaction mixture is allowed to cool to RT and the precipitate formed is filtered off by suction and washed with EtOH and then with water. 1.965 g of the expected product are obtained after drying under vacuum.

B) 3-(2,3-Dihydrobenzo[1,4]dioxin-6-yl)-3-(naphthalene-2-sulphonylamino)propionic acid

This compound is prepared according to the procedure described in step B of preparation 1.5, starting with 1 g of the compound obtained in the preceding step, 4.5 ml of 1N NaOH, 15 ml of dioxane and 1.02 g of 2-naphthalenesulphonyl chloride. 0.876 g of the expected product is obtained after crystallization from hexane.

Preparation 1.9 3-(2,3-Dihydrobenzo[1,4]dioxin-6-yl)-3-(5,6,7,8-tetrahydronaphthalene-2-sulphonylamino)propionic acid

A solution of 0.570 g of 5,6,7,8-tetrahydronaphthalene-2-sulphonyl chloride in 15 ml of dioxane is added dropwise to a mixture of 0.5 g of the compound obtained in step A of preparation 1.8 and 4.5 ml of 1N NaOH in 20 ml of dioxane, and the mixture is stirred for 4 hours at RT. The reaction mixture is concentrated under vacuum, the residue is taken up in 1N NaOH and washed with DCM, the aqueous phase is acidified to pH 1 by adding concentrated HCl, and extracted with DCM, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.5 g of the expected product is obtained.

Preparation 1.10 3-[(2,4-Dichloro-3-methylbenzenesulphonyl)phenylamino]propionic acid

A) 2,4-Dichloro-3-methylbenzenesulphonyl chloride

This compound is prepared according to the procedure described in J. Am. Chem. Soc., 1940, 62, 511–512.

B) Methyl 3-(phenylamino)propionate

A mixture of 20 ml of aniline, 22 ml of methyl acrylate and 2 ml of acetic acid is refluxed for 8 hours. After concentrating the reaction mixture under vacuum, the resulting oil is distilled off under reduced pressure (b.p.=132° C. at 333.3 Pa and then b.p.=110° C. at 6.66 Pa). The product obtained is taken up in hexane and the precipitate formed is filtered off by suction. 25 g of the expected product are obtained.

C) Methyl 3-[(2,4-dichloro-3-methylbenzenesulphonyl)phenylamino]propionate

A mixture of 1.5 g of the compound obtained in step A, 1.03 g of the compound obtained in step B and 0.08 g of DMAP in 20 ml of pyridine is stirred for 1 hour at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with a buffer solution pH=2, with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 2.32 g of the expected product are obtained.

D) 3-[(2,4-Dichloro-3-methylbenzenesulphonyl)phenylamino]propionic acid

8.7 ml of 1N KOH are added to a solution of 2.32 g of the compound obtained in the preceding step in 10 ml of EtOH and 10 ml of dioxane, and the mixture is stirred overnight at RT. The reaction mixture is concentrated under vacuum, the residue is taken up in saturated NaHCO₃ solution, the aqueous phase is washed with ether, acidified to pH 1 by adding 1N HCl and extracted with DCM, the organic phase is washed with water and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.912 g of the expected product is obtained.

NMR: δ (ppm): 2.35: t: 2H; 2.5: s: 3H; 4.0: t: 2H; 7.15 to 7.4: unres.: 5H; 7.45 to 7.65: q: 2H; 12.2 to 12.5: bs: 1H.

Preparation 1.11 2,5-Dioxopyrrolidin-1-yl 3-(naphthalene-2-sulphonylamino)-3-phenylpropionate

1.13 g of 1,3-dicyclohexylcarbodiimide are added to a mixture of 1.78 g of the compound obtained in Preparation 1.1 and 0.578 g of N-hydroxysuccinimide in 15 ml of DMF, and the mixture is stirred overnight at RT. After filtering off by suction the 1,3-dicyclohexylurea formed, the filtrate is diluted with water and extracted with EtOAc, the organic phase is washed with saturated NaHCO₃ solution, with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 1.81 g of the expected product are obtained.

Preparation 1.12 3-Phenyl-3-(quinoline-2-sulphonylamino)propionic acid

This compound is prepared according to the procedure described in Preparation 3.13 of international patent application WO 97/25315.

Preparation 1.13 (R) 3-(N-Boc)Amino-3-(benzo[1.3]dioxol-5-yl)propionic acid

A) (R) 3-(Phenylacetyl)amino-3-(benzo[1,3]dioxol-5-yl)propionic acid

20 g of 3-amino-3-(benzo[1,3]dioxol-5-yl)propionic acid hydrochloride are placed in 10 ml of acetone, 30 ml of water and 38 ml of TEA at −5° C. and 14 ml of phenylacetyl chloride in 20 ml of acetone are added dropwise, followed by stirring for 2 hours at −5° C. The acetone is concentrated. The aqueous phase is washed with Et₂O and the insoluble material is removed by filtration. The phases are separated again by settling and the aqueous phase is washed with Et₂O and then acidified with 1N HCl to pH 2. The resulting phase is poured into DCM and a precipitate forms. The precipitate is filtered off by suction and rinsed with DCM. 24 g of the expected compound are obtained.

B) (R) 3-Amino-3-(benzo[1,3]dioxol-5-yl)propionic acid HCl

4 g of the compound from the preceding step are placed in 150 ml of water, 12.23 ml of 1N KOH are added and the mixture is stirred for 15 minutes at RT. The pH of the solution is approximately 11; AcOH is added and the pH is adjusted to 7.5±0.1. 250 μl of penicillin amidase are added and the mixture is stirred overnight at RT, while maintaining the pH at 7.5±0.1. The mixture is acidified to pH 2 by adding 1N HCl and then washed with EtOAc. The aqueous phase is heated to 65° C. with active vegetable charcoal for 5 minutes. The resulting mixture is filtered through Celite® and the aqueous phase is washed with Et₂O and then concentrated to dryness and evaporated. The residue is taken up in an MeOH/DCM mixture (6/4; v/v) and the insoluble material (mineral) is then removed and the organic phase is dried over sodium sulphate and concentrated. 1.75 g of expected compound are obtained.

NMR: δ (ppm): 2.7–3.1: mt: 2H; 4.4: unres.: 1H; 6.0: s: 2H; 6.9: q: 2H; 7.1: s: 1H.

C) (R) 3-(N-Boc)Amino-3-(benzo[1.3]dioxol-5-yl)propionic acid

1.30 g of the compound obtained in the preceding step are placed in 20 ml of dioxane and 20 ml of water; 1.8 ml of TEA and then 1.54 g of (Boc)₂O are added and the mixture is stirred overnight at RT. The reaction mixture is diluted with water, washed with Et₂O and then acidified to pH 2 by addition of KHSO₄/K₂SO₄. The resulting mixture is extracted with EtOAc and then washed with saturated NaCl solution. 0.850 g of the expected compound is obtained.

α_(D) ²⁵=+54° (c=0.5; MeOH)

By working according to the methods described above, the compounds of formula (II) described in Table III below are prepared:

TABLE III (II)

Preparation X R₂ R₃ m.p. ° C. 1.14

H

1.15

H

1.16

H

1.17

H 174° C. 1.18

H

139–142° C. 1.19

H

148° C. 1.20

H 120° C. 1.21

H

185° C. 1.22

H 159° C. 1.23

H

68° C. 1.24

H oil 1.25TFA

H 137° C. 1.26TFA

H 184° C. 1.27TFA

H 163° C. 1.28

H 180° C. 1.29TFA

H 154° C. 1.30

H 160° C. 1.31

H 193° C.

Preparation 1.14

NMR: 2.2 ppm: mt: 2H; 2.8 ppm: s: 6H; 4.5 ppm: t: 1H; 6.9 ppm: mt: 6H; 7.2 ppm: d: 1H; 7.4 ppm: t: 1H; 7.55 ppm: t: 1H; 7.9 ppm: d: 1H; 8.3 ppm: t: 1H.

Preparation 1.15

NMR; 2.55 ppm: mt: 2H; 4.65 ppm: mt: 1H; 6.4–8.0 ppm: mt: 15H; 8.1 ppm: s: 1H; 8.4 ppm: d: 1H.

Preparation 1.16

NMR; 2.5–2.7 ppm: mt: 2H; 4.7 ppm: q: 1H; 7.0–8.1 ppm: mt: 11H; 8.5 ppm: d: 1H.

Preparation 1.17

NMR (DMSO+TFA): 2.4 ppm: t: 2H; 2.55 ppm: s: 3H; 4.0 ppm: t: 2H; 6.05 ppm: s: 2H; 6.6 ppm: dd: 1H; 6.8 ppm: mt: 2H; 7.55 ppm: d: 1H; 7.65 ppm: d: 1H.

Preparation 1.18

NMR (DMSO+TFA): 2.40–2.65 ppm: mt: 2H; 4.60–4.75 ppm: t: 1H; 6.20 ppm: s: 1H; 7.10–8.40 ppm: unres.: 9H.

Preparation 1.25

NMR (250 MHz): 2.35–2.45 ppm: t: 2H; 3.80–3.90 ppm: t: 2H; 7.30–8.60 ppm: mt: 11H.

Preparation 1.26

NMR (250 MHz): 2.35–2.45 ppm: t: 2H; 2.50 ppm: s: 3H; 3.95–4.05 ppm: t: 2H; 7.35–8.50 ppm: mt: 6H.

Preparation 1.27

NMR (250 MHz): 2.40 ppm: s: 3H; 2.50–2.60 ppm: t: 2H; 4.15–4.25 ppm: t: 2H; 7.55–8.65 ppm: mt: 6H.

Preparation 1.28

NMR: 2.55–2.75 ppm: t: 2H; 4.15–4.45 ppm: t: 2H; 7.55–8.75 ppm: mt: 11H.

Preparation 1.29

NMR (DMSO+TFA): 2.4 ppm: t: 2H; 2.5 ppm: mt: 5H; 4.0 ppm: t: 2H; 7.25 ppm: dd: 1H; 7.7 ppm: mt: 4H.

Preparation 1.30

NMR: 2.4 ppm: t: 2H; 2.5 ppm: mt: 5H; 4.0 ppm: unres.: 2H; 7.3–7.6 ppm: mt: 6H.

Preparation 1.31

NMR (DMSO+TFA): 1.9 ppm: quint: 2H; 2.25 ppm: t: 2H; 2.4 ppm: mt: 4H; 2.85 ppm: t: 4H; 3.85 ppm: t: 2H; 6.8: dd: 1H; 7.0 ppm: unres.: 2H; 7.5 ppm: q: 2H.

Preparation 1.32

A) S-(4-Methoxy)phenyl ethanethioate

15 g of 4-methoxybenzenethiol are dissolved in 20 ml of water containing 4.3 g of NaOH and the mixture is stirred for 20 minutes at RT. 8.5 ml of 1-chloroacetone are added dropwise and the mixture is stirred for 1 hour at RT. The reaction mixture is extracted with ether (twice), dried and evaporated to give 20 g of the expected compound.

B) 5-Methoxy-3-methylbenzothiophene

10 g of the compound from the preceding step and 20 ml of polyphosphoric acid are mixed together in 400 ml of chlorobenzene, and the mixture is stirred for 1 hour at RT and then heated at 120° C. for 18 hours. The reaction mixture is allowed to cool and the phases are then separated by settling. The residual oil is taken up in DCM (twice) and the phases are then separated again by settling.

The supernatant phases are combined and then evaporated. The residue is taken up in DCM and then washed with water, followed by NaHCO₃ solution. After evaporating off the solvent, the residue is chromatographed on silica, eluting with a hexane/EtOAc mixture (98/2; v/v) to give 5.2 g of the expected compound.

C) Lithium (5-methoxy-3-methyl-1-benzothiophen-2-yl)sulphinate

1.69 g of the compound from the preceding step are dissolved in 10 ml of THF and the mixture is cooled to −20° C. 6.6 ml of butyllithium (1.8M in hexane) are added over 15 minutes, followed by slow addition of SO₂ in an amount sufficient to saturate the medium. After stirring for 20 minutes at −20° C., the mixture is allowed to warm to RT. 50 ml of Et₂O are added and the resulting mixture is then filtered by suction and dried to give 2.4 g of the expected compound.

D) 5-Methoxy-3-methyl-1-benzothiophene-2-sulphonyl chloride

2.4 g of the compound from the preceding step are suspended in 20 ml of CH₂Cl₂. The mixture is cooled to 5° C., followed by portionwise addition of 1.26 g of N-chlorosuccinimide, and the resulting mixture is stirred for one hour at 5° C. The reaction mixture is washed with water and the water is re-extracted with CH₂Cl₂. The organic phases are combined, washed with NaCl solution, dried and evaporated to give 1.8 g of the expected compound.

NMR: 2.50 ppm: s: 3H; 3.85 ppm: s: 3H; 7.0–7.80 ppm: mt: 3H.

E) The process is then performed according to the usual methods to obtain the expected compound.

Preparation 1.33

A) 6-Methoxy-3-methyl-1-benzothiophene-2-sulphonyl chloride

This compound is prepared according to the process described in the above preparation.

NMR: 2.50 ppm: s: 3H; 3.85 ppm: s: 3H; 7.0–7.70 ppm: mt: 3H.

B)

The process is then performed according to the usual methods to obtain the expected compound.

Other compounds of formula (II) prepared according to the methods known from the literature or described above were prepared in racemic form or in the form of pure isomers.

TABLE IV (II)

Preparation m.p. ° C. or (isomer) X R₃ NMR 1.34 Boc

114° C. 1.35

159° C. 1.36

NMR 1.37

248° C.145° C. 1.38(R) Boc

120° C. 1.39 HBoc

NMR167° C. 1.40(R) H

NMR 1.41 HBoc

242° C.190° C. 1.42 HBoc

260° C.198° C. 1.43 HBoc

228° C.NMR 1.44 HBoc

204° C.125° C. 1.45(a) HBoc

NMRNMR

(a) This compound is prepared from 1-benzofurancarbonitrile described in European patent application 540 041.

Preparation 2.1 2-Amino-3-(4-cyanophenyl)-1-(pyrrolidin-1-yl)propan-1-one trifluoroacetate

7.5 g of BOP are added to a mixture of 4.06 g of 2-(tert-butoxycarbonylamino)-3-(4-cyanophenyl)propionic acid and 1.15 ml of pyrrolidine in 20 ml of DMF, and the mixture is stirred for 2 hours at RT, while keeping the pH at 7 by adding N-ethylmorpholine. The reaction mixture is concentrated under vacuum and the residue is chromatographed on silica gel, eluting with a chloroform/MeOH mixture (95/5; v/v). The product obtained is taken up in 20 ml of TFA in 20 ml of DCM, and the reaction mixture is stirred for 30 minutes at RT and concentrated under vacuum. The residue is taken up in ether and the precipitate formed is filtered off by suction. 3.95 g of the expected product are obtained after drying.

Preparation 2.2 2-Amino-3-[4-(tert-butylaminomethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one bis(trifluoroacetate)

A) Ethyl 2-(benzhydrylideneamino)-3-(4-bromomethylphenyl)propionate

This compound is prepared according to the procedure described in Tetrahedron: Asymmetry, 1992, 3 (5), 637–650.

B) Ethyl 2-(benzhydrylideneamino)-3-[4-(tert-butylaminomethyl)phenyl]propionate

0.76 g of K₂CO₃ is added to a solution of 0.58 ml of tert-butylamine in 8 ml of DMF, and the mixture is stirred for 20 minutes at RT. A solution of 2.15 g of the compound obtained in the preceding step in 3 ml of DMF is then added and the mixture is stirred for 3 hours 30 minutes at RT. The reaction mixture is extracted with EtOAc, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 2.67 g of the expected product are obtained in the form of an oil.

C) Ethyl 2-amino-3-[4-(tert-butylaminomethyl)phenyl]propionate

A mixture of 2.66 g of the compound obtained in the preceding step and 30 ml of aqueous 1N HCl solution in 30 ml of ether is stirred overnight at RT. After separation of the phases by settling, EtOAc is added to the acidic aqueous phase and the mixture is basified to pH 11 by adding 10N NaOH. After separation of the phases by settling, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.88 g of the expected product is obtained in the form of an oil.

D) Ethyl 2-(tert-butoxycarbonylamino)-3-[4-(tert-butylaminomethyl)phenyl]propionate

0.7 g of di-tert-butyl dicarbonate is added portionwise to a solution of 0.88 g of the compound obtained in the preceding step in 12 ml of dioxane, and the mixture is stirred for 1 hour 30 minutes at RT. The reaction mixture is extracted with EtOAc, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 1.34 g of the expected product are obtained in the form of an oil.

E) 2-(tert-Butoxycarbonylamino)-3-[4-(tert-butylaminomethyl)phenyl]propionic acid.

A mixture of 1.33 g of the compound obtained in the preceding step and 0.75 ml of 8.3N KOH in 8 ml of MeOH is stirred for 2 hours at RT. A chloroform/water mixture is added to the reaction mixture and the resulting mixture is acidified to pH 4 by adding 10N HCl. After separation of the phases by settling, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum to give a first crop of 0.54 g of the expected product. The aqueous phases and the washing liquors are concentrated under vacuum, the residue is taken up in 2-propanol, the insoluble material is filtered off and the filtrate is concentrated under vacuum to give a second crop of 0.51 g of the expected product.

F) 2-(tert-Butoxycarbonylamino)-3-[4-(tert-butylaminomethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one.

0.6 ml of DIPEA is added to a mixture of 1.03 g of the compound obtained in the preceding step in 15 ml of DMF, followed by addition of 0.28 ml of pyrrolidine and 1.46 g of BOP, and the mixture is stirred for 4 hours at RT, while maintaining the pH at 6 by adding DIPEA. The reaction mixture is extracted with EtOAc, the organic phase is washed with water, with 0.2N NaOH, with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 1.3 g of the expected product are obtained in the form of an oil.

G) 2-Amino-3-[4-(tert-butylaminomethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one bis(trifluoroacetate).

A mixture of 1.29 g of the compound obtained in the preceding step and 17 ml of TFA in 15 ml of DCM is stirred for 50 minutes at RT. After concentrating the reaction mixture under vacuum, the residue is taken up in DCM and the solvent is evaporated off under vacuum. The residue is taken up in ether and the solvent is then decanted off. 1.5 g of the expected product are obtained in the form of a foam after drying, and this product is used without further purification in Example 2.

Preparation 2.3 2-Amino-3-[4-(N-propyl-N-methylaminomethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one dihydrochloride

This compound is prepared according to Scheme 9.

A) 2-(tert-Butoxycarbonylamino)-3-(4-cyanophenyl)-1-(pyrrolidin-1-yl)propan-1-one

7.5 g of BOP are added to a mixture of 4.06 g of 2-(tert-butoxycarbonylamino)-3-(4-cyanophenyl)propionic acid and 1.15 ml of pyrrolidine in 20 ml of DMF, and the mixture is stirred for 2 hours at RT, while maintaining the pH at 7 by adding N-ethylmorpholine. The reaction mixture is concentrated under vacuum and the residue is chromatographed on silica gel, eluting with a chloroform/MeOH mixture (95/5; v/v). 3.8 g of the expected product are obtained.

B) 2-(tert-Butoxycarbonylamino)-3-(4-formylphenyl)-1-(pyrrolidin-1-yl)propan-1-one

A solution of 2 g of the compound obtained in the preceding step in 150 ml of a pyridine/AcOH/H₂O mixture (2/1/1; v/v/v) is cooled to 0° C., 10.57 g of sodium hypophosphite hydrate are added under an argon atmosphere, followed by addition of 1.8 g of Raney® nickel in water, and the mixture is stirred for 10 minutes at RT. The reaction mixture is heated at 50° C. for 3 hours. After cooling to RT, the mixture is filtered through Celite®, washed with EtOH and then with DCM, and the filtrate is concentrated under vacuum. The residue is extracted with EtOAc, the organic phase is washed with water, with 5% KHSO₄ solution, with saturated NaCl solution, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with EtOAc. 1.7 g of the expected product are obtained; m.p.=134° C.

C) 2-(tert-Butoxycarbonylamino)-3-[4-(N-propyl-N-methylamino methyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one

0.42 ml of AcOH and then 0.707 g of sodium triacetoxyborohydride are added to a mixture of 0.77 g of the compound obtained in the preceding step and 0.34 ml of N-methylpropylamine in 10 ml of 1,2-dichloroethane, and the mixture is stirred overnight at RT. The reaction mixture is diluted with DCM, the organic phase is washed with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.9 g of the expected product is obtained.

D) 2-Amino-3-[4-(N-propyl-N-methylaminomethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one dihydrochloride

5 ml of 10N HCl are added to a mixture of 0.88 g of the compound obtained in the preceding step in 10 ml of MeOH and 5 ml of dioxane, and the mixture is stirred for 4 hours at RT. EtOH is added and the reaction mixture is concentrated under vacuum. The residue is taken up in ether and the precipitate formed is filtered by suction after trituration. 0.83 g of the expected product is obtained; m.p.=140° C. (dec.).

Preparation 2.4 2-Amino-3-[4-[N,N-bis(2-hydroxyethyl)aminomethyl]phenyl]-1-(pyrrolidin-1-yl)propan-1-one bis(trifluoroacetate)

A) Ethyl 2-(benzhydrylideneamino)-3-[4-[N,N-bis(2-hydroxyethyl)aminomethyl]phenyl]propionate

This compound is prepared according to the procedure described in step B of preparation 2.2, starting with 0.925 g of diethanolamine in 15 ml of DMF, 1.21 g of K₂CO₃ and 3.6 g of the compound obtained in step A) of preparation 2.2 in 20 ml of DMF. 4.23 g of the expected product are obtained in the form of an oil.

B) Ethyl 2-amino-3-[4-[N,N-bis(2-hydroxyethyl)aminomethyl]phenyl]propionate

This compound is prepared according to the procedure described in step C) of preparation 2.2, starting with 4.22 g of the compound obtained in the preceding step and 70 ml of 1N HCl in 70 ml of ether. 1.87 g of the expected product is obtained in the form of a wax.

C) Ethyl 2-(tert-butoxycarbonylamino)-3-[4-[N,N-bis(2-hydroxyethyl)aminomethyl]phenyl]propionate

This compound is prepared according to the procedure described in step D of preparation 2.2, starting with 1.87 g of the compound obtained in the preceding step in 20 ml of dioxane and 1.4 g of di-tert-butyl dicarbonate. 2.15 g of the expected product are obtained.

D) 2-(tert-Butoxycarbonylamino)-3-[4-[N,N-bis(2-hydroxyethyl)aminomethyl]-phenyl]propionic acid

A mixture of 2.13 g of the compound obtained in the preceding step and 1.3 ml of 8.3N KOH in 15 ml of MeOH is stirred for 3 hours at RT. Next, a further 0.3 ml of 8.3N KOH are added and the mixture is stirred for one hour at RT. An EtOAc/H₂O mixture is added to the reaction mixture and the resulting mixture is acidified to pH 3.7 by adding 1N HCl. After separation of the phases by settling, the organic phase is washed with water and with saturated NaCl solution, and dried over Na₂SO₄, and the solvent is evaporated off under vacuum to give a first crop of the expected product. The aqueous phase is concentrated under vacuum, the residue is taken up in an MeOH/2-propanol mixture (1/1; v/v), the insoluble material is filtered off and the filtrate is concentrated under vacuum to give a second crop. 1.66 g of the expected product are obtained in the form of a white solid.

E) 2-(tert-Butoxycarbonylamino)-3-[4-[N,N-bis(2-hydroxyethyl)aminomethyl]-phenyl]-1-(pyrrolidin-1-yl)propan-1-one.

This compound is prepared according to the procedure described in step F of preparation 2.2, starting with 0.95 g of the compound obtained in the preceding step in 12 ml of DMF, 0.6 ml of DIPEA, 0.24 ml of pyrrolidine and 1.44 g of BOP. The expected product is obtained in the form of a wax, which is used without further purification in the following step.

F) 2-Amino-3-[4-[N,N-bis(2-hydroxyethyl)aminomethyl]phenyl] 1-(pyrrolidin-1-yl)propan-1-one bis(trifluoroacetate).

This compound is prepared according to the procedure described in step G) of preparation 2.2, starting with the compound obtained in the preceding step and 18 ml of TFA in 15 ml of DCM. The expected product is obtained, and is used without further purification in Example 4.

Preparation 2.5 1,2-Bis[4-(diethylaminomethyl)phenyl]ethylamine tris(trifluoroacetate)

A) Methyl 4-(azidomethyl)benzoate

8.13 g of sodium azide are added over 5 minutes to a solution of 5.73 g of methyl 4-(bromomethyl)benzoate in 30 ml of DMSO and the mixture is stirred for 3 hours 30 minutes at RT. The reaction mixture is extracted with ether, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 4.72 g of the expected product are obtained in the form of a colourless oil.

B) Methyl 4-(aminomethyl)benzoate hydrochloride

A solution of 4.71 g of the compound obtained in the preceding step in 30 ml of THF is cooled to 4° C., 6.57 g of triphenylphosphine are added portionwise over 30 minutes and the mixture is stirred for 6 hours while allowing the temperature to return to RT. Next, 0.68 ml of water is added and the mixture is stirred for 16 hours at RT. The reaction mixture is extracted with EtOAc, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvents are evaporated off under vacuum. The residue is taken up in ether, the insoluble material is filtered off, the filtrate is concentrated under vacuum and the residue is chromatographed on silica gel, eluting with a chloroform/MeOH/NH₄OH mixture (90/10/0.2; v/v/v). The product obtained is taken up in MeOH, 10N HCl is added to pH 1 and the mixture is concentrated under vacuum. 4.25 g of the expected product are obtained.

C) Methyl 4-(benzhydrylideneaminomethyl)benzoate

A mixture of 3.03 g of the compound obtained in the preceding step, 2.07 ml of triethylamine and 2.51 ml of benzophenoneimine in 50 ml of DCM is stirred overnight at RT. The reaction mixture is extracted with DCM, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 5.33 g of the expected product are obtained in the form of an oil.

D) Methyl 4-[1-amino-2-(4-methoxycarbonylphenyl)ethyl]benzoate

A solution of 5.32 g of the compound obtained in the preceding step in 40 ml of THF is cooled to −50° C., 10.3 ml of a 1.6 M solution of n-butyllithium in hexane are added over 35 minutes and the mixture is stirred for 30 minutes at between −50° C. and −30° C. The reaction mixture is cooled again to −50° C., a solution of 3.78 g of methyl 4-(bromomethyl)benzoate in 25 ml of THF is added over 30 minutes and the mixture is stirred for 4 hours after the temperature has returned to RT. Next, 50 ml of 1N HCl are added and the reaction mixture is stirred for 16 hours at RT. The phases of the reaction mixture are allowed to separate by settling, the acidic phase is washed with ether, the acidic aqueous phase is basified to pH 10 by adding 10N NaOH and extracted with EtOAc, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 3.88 g of the expected product are obtained in the form of a pasty white solid.

E) Methyl 4-[1-(tert-butoxycarbonylamino)-2-(4-methoxycarbonylphenyl)-ethyl]benzoate.

2.94 g of di-tert-butyl dicarbonate are added over 10 minutes to a solution of 3.88 g of the compound obtained in the preceding step in 30 ml of dioxane, and the mixture is stirred for 3 hours at RT. The reaction mixture is extracted with EtOAc, the organic phase is washed with water, with a KHSO₄/K₂SO₄ buffer solution, with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 2.3 g of the expected product are obtained after crystallization from ether.

F) N-tert-Butoxycarbonyl-1,2-bis[4-(hydroxymethyl)phenyl]ethylamine.

A solution of 1.24 g of the compound obtained in the preceding step in 15 ml of THF is added over 40 minutes to a suspension of 0.456 g of lithium aluminium hydride in 25 ml of THF, and the mixture is stirred for 2 hours at RT. An EtOAc/ice mixture is then added and the reaction mixture is extracted with EtOAc, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.95 g of the expected product is obtained in the form of a white solid.

G) 4-[2-(tert-Butoxycarbonylamino)-2-(4-methanesulphonyloxymethylphenyl)-ethyl]benzyl methanesulphonate.

A solution of the compound obtained in the preceding step in 20 ml of DCM and 3 ml of THF is cooled to 4° C., 0.82 ml of triethylamine is added, followed by addition of a solution of 0.45 ml of methanesulphonyl chloride in 1 ml of DCM over 10 minutes, and the mixture is stirred for 3 hours 30 minutes at RT. The reaction mixture is extracted with DCM, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 1.21 g of the expected product are obtained.

H) N-(tert-Butoxycarbonyl)-1,2-bis [4-(diethylaminomethyl)phenyl]ethylamine.

A mixture of 1.2 g of the compound obtained in the preceding step and 1.05 ml of diethylamine in 20 ml of EtOH is heated at 60° C. for 4 hours. After cooling to RT, the reaction mixture is extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution, with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a chloroform/MeOH/NH₄OH mixture (85/15/0.2; v/v/v). 0.51 g of the expected product is obtained.

I) 1,2-bis[4-(Diethylaminomethyl)phenyl]ethylamine tris(trifluoroacetate).

A mixture of 0.5 g of the compound obtained in the preceding step and 12 ml of TFA in 10 ml of DCM is stirred for 45 minutes at RT. The reaction mixture is concentrated under vacuum and the residue is taken up in DCM and concentrated again under vacuum. 0.82 g of the expected product is obtained in the form of an oil.

Preparation 2.6 2-Amino-3-[4-(piperid-1-ylmethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one dihydrochloride

A) 2-(tert-Butoxycarbonylamino)-3-[4-(piperid-1-ylmethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one

This compound is prepared according to the procedure described in step C) of preparation 2.3, starting with 0.84 g of the compound obtained in step B) of preparation 2.3, 0.263 ml of piperidine, 10 ml of 1,2-dichloroethane, 0.452 ml of AcOH and 0.771 g of sodium triacetoxyborohydride. The reaction mixture is diluted with DCM, the organic phase is washed with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The product obtained is taken up in ether, the insoluble material is filtered off and the filtrate is concentrated under vacuum. 0.975 g of the expected product is obtained in the form of an oil.

B) 2-Amino-3-[4-(piperid-1-ylmethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one dihydrochloride

This compound is prepared according to the procedure described in step D) of preparation 2.3, starting with 0.97 g of the compound obtained in the preceding step, 10 ml of MeOH, 5 ml of dioxane and 5 ml of 10N HCl. 0.91 g of the expected product is obtained; m.p.=170° C. (dec.)

NMR: 1.2–2.0 ppm: unres.: 10H; 2.4–3.4 ppm: unres.: 10H; 4.2 ppm: bs: 3H; 7.2 ppm: d: 2H; 7.6 ppm: d: 2H; 8.4 ppm: s: 3H; 11.2 ppm: s: 1H.

Preparation 2.7 2-Amino-3-[4-(diethylaminomethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one dihydrochloride

For its preparation steps D, E and F, this compound is obtained according to Scheme 10.

A) Ethyl 2-(benzhydrylideneamino)-3-[4-(diethylaminomethyl)phenyl]propionate

A mixture of 1 g of the compound obtained in step A) of preparation 2.2, 0.235 ml of diethylamine and 0.307 g of K₂CO₃ in 10 ml of DMF is stirred for 2 hours at RT. The reaction mixture is extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.927 g of the expected product is obtained in the form of an oil.

B) Ethyl 2-amino-3-[4-(diethylaminomethyl)phenyl]propionate

A mixture of 0.927 g of the compound obtained in the preceding step and 20 ml of 1N HCl in 30 ml of ether is stirred for 2 hours at RT. After separation of the phases by settling, the acidic aqueous phase is washed with ether, the aqueous phase is basified to pH 11 by adding solid NaHCO₃ and is extracted with DCM, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.395 g of the expected product is obtained.

C) Ethyl 2-(tert-butoxycarbonylamino)-3-[4-(diethylaminomethyl)phenyl]propionate

1.72 g of di-tert-butyl dicarbonate are added to a solution of 2 g of the compound obtained in the preceding step in 20 ml of DCM, followed by addition of 1.1 ml of triethylamine, and the mixture is stirred for 2 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 2.6 g of the expected product are obtained; m.p.=56° C.

D) 2-(tert-Butoxycarbonylamino)-3-[4-(diethylaminomethyl)phenyl]propionic acid

10.1 ml of 1N KOH are added to a solution of 2.55 g of the compound obtained in the preceding step in 60 ml of EtOH and 20 ml of dioxane, and the mixture is heated for 1 hour at 60° C. After cooling to RT, 10 ml of 1N HCl are added and the reaction mixture is concentrated under vacuum. The residue is azeotroped by adding an EtOH/toluene mixture and is then concentrated under vacuum. The residue is taken up in a DCM/MeOH mixture (9/1; v/v), the insoluble material is filtered off and the filtrate is concentrated under vacuum. 2.4 g of the expected product are obtained.

E) 2-(tert-Butoxycarbonylamino)-3-[4-(diethylaminomethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one

0.61 ml of triethylamine and then 2.12 g of BOP are added to a mixture of 1.53 g of the compound obtained in the preceding step and 0.365 ml of pyrrolidine in 10 ml of DMF, and the mixture is stirred for 2 hours at RT. The reaction mixture is poured into water and extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 1.5 g of the expected product are obtained.

F) 2-Amino-3-[4-(diethylaminomethyl)phenyl]-1-(pyrrolidin-1-yl)propan-1-one dihydrochloride

6 ml of concentrated HCl are added to a solution of 1.5 g of the compound obtained in the preceding step in 20 ml of dioxane and 10 ml of MeOH, and the mixture is stirred overnight at RT. The reaction mixture is concentrated under vacuum and the residue is taken up in EtOH and concentrated again under vacuum. The residue is taken up in ether and the solvent is decantered off after trituration. 1.37 g of the expected product are obtained in the form of a gum.

Preparation 2.8

2-Amino-3-[4-(diethylaminomethyl)phenyl]-N-isopropyl-N-methylpropionamide bis(trifluoroacetate)

A) 2-(tert-Butoxycarbonylamino)-3-[4-(diethylaminomethyl)phenyl]-N-isopropyl-N-methylpropionamide

0.279 ml of triethylamine is added to a mixture of 0.7 g of the compound obtained in step D) of preparation 2.7 and 0.208 ml of N-methylisopropylamine in 10 ml of DMF, followed by addition of 0.973 g of BOP, and the mixture is stirred for 2 hours at RT. The reaction mixture is poured into water and extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.65 g of the expected product is obtained.

B) 2-amino-3-[4-(diethylaminomethyl)phenyl]-N-isopropyl-N-methylpropionamide bis(trifluoroacetate)

5 ml of TFA are added to a solution of 0.63 g of the compound obtained in the preceding step in 5 ml of DCM, and the mixture is stirred for 2 hours at RT. The reaction mixture is concentrated under vacuum, the residue is taken up in iso ether and the solvent is decantered off after trituration. The expected product is obtained after drying under vacuum.

Preparation 2.9 2-amino-3-[4-(diethylaminomethyl)phenyl]-N,N-diisopropylpropionamide dihydrochloride

(III), 2HCl: Y=—CO—N(iPr)₂; Z=—CH₂—N(Et)₂

A) 2-(tert-Butoxycarbonylamino)-3-(4-cyanophenyl)-N,N-diisopropylpropionamide

A mixture of 1 g of 2-(tert-butoxycarbonylamino)-3-(4-cyanophenyl)propionic acid and 0.540 g of diisopropylamine in 10 ml of DCM is cooled to 0° C., 0.960 ml of triethylamine is added, followed by addition of 1.76 g of bromotripyrrolidinophosphonium hexafluorophosphate, and the mixture is stirred for 2 hours and allowed to warm to RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with water, with 5% KHSO₄ solution, with water, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a heptane/EtOAc mixture (80/20; v/v). 0.4 g of the expected product is obtained; m.p.=172° C.

B) 2-(tert-Butoxycarbonylamino)-3-(4-formylphenyl)-N,N-diisopropylpropionamide

This compound is prepared according to the procedure described in step B of preparation 2.3, starting with 0.380 g of the compound obtained in the preceding step, 25 ml of a pyridine/AcOH/H₂O mixture (2/1/1; v/v/v), 1,8 g of sodium hypophosphite hydrate and 0.31 g of Raney® nickel. 0.35 g of the expected product is obtained without performing chromatography; m.p.=152° C.

C) 2-(tert-Butoxycarbonylamino)-3-[4-(diethylaminomethyl)phenyl)-N,N-diisopropylpropionamide

This compound is prepared according to the procedure described in step C of preparation 2.3, starting with 0.333 g of the compound obtained in the preceding step, 0.135 ml of diethylamine, 10 ml of 1,2-dichloroethane, 0.08 ml of AcOH and 0.281 g of sodium triacetoxyborohydride. 0.4 g of the expected product is obtained.

D) 2-Amino-3-[4-(diethylaminomethyl)phenyl]-N,N-diisopropylpropionamide dihydrochloride

5 ml of concentrated HCl are added to a mixture of 0.4 g of the compound obtained in the preceding step in 10 ml of MeOH and 5 ml of dioxane, and the mixture is stirred overnight at RT. The reaction mixture is concentrated under vacuum and the residue is taken up in EtOH and evaporated under vacuum. 0.37 g of the expected product is obtained.

Preparation 2.10 2-[4-(Diethylaminomethyl)phenyl]-1-(pyrid-3-yl)ethylamine tris(trifluoroacetate)

A) Benzhydrylidenepyrid-3-ylmethylamine

1.7 ml of 3-(aminomethyl)pyridine are added to a solution of 2.8 ml of benzophenoneimine in 50 ml of DCM, and the mixture is stirred overnight at RT. A further 0.28 ml of benzophenoneimine is added and the mixture is stirred for 2 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with ether, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 4.56 g of the expected product are obtained.

B) Methyl 4-[2-amino-2-(pyrid-3-yl)ethyl]benzoate

A solution of 3 g of the compound obtained in the preceding step in 30 ml of THF is cooled to −78° C., under an argon atmosphere, 8.2 ml of a 1.5 M solution of lithium diisopropylamide in cyclohexane are added and the mixture is stirred for 30 minutes while allowing the temperature to rise to −20° C. The mixture is cooled again to −78° C., a solution of 2.82 g of methyl 4-(bromomethyl)benzoate in 10 ml of THF is added dropwise and the mixture is stirred for 2 hours while allowing the temperature to rise to RT. The reaction mixture is cooled to 0° C., 25 ml of 1N HCl are added slowly, followed by addition of concentrated HCl solution to pH 2–3, and the mixture is stirred overnight at RT. An ether/water mixture (1/1; v/v) is added to the reaction mixture and, after separation of the phases by settling, the organic phase is extracted with 1N HCl solution, the combined aqueous phases are basified to pH 8 by adding concentrated NaOH and extracted with DCM, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 2 g of the expected product are obtained.

C) Methyl 4-[2-(tert-butoxycarbonylamino)-2-(pyrid-3-yl)ethyl]benzoate

1.83 g of di-tert-butyl dicarbonate are added to a solution of 1.95 g of the compound obtained in the preceding step in 20 ml of DCM, followed by addition of 1.16 ml of triethylamine, and the mixture is stirred for 2 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a heptane/EtOAc mixture of from (60/40; v/v) to (40/60; v/v). 1.3 g of the expected product are obtained.

D) N-tert-Butoxycarbonyl-2-(4-hydroxymethylphenyl)-1-(pyrid-3-yl)ethylamine

A solution of 1.13 g of the compound obtained in the preceding step in 30 ml of THF is cooled to −78° C., under an argon atmosphere, 7.2 ml of a 1M solution of diisobutylaluminium hydride in toluene are added dropwise and the mixture is stirred for 2 hours while allowing the temperature to rise to 0° C. The reaction mixture is cooled to −40° C., a further 7.2 ml of a 1M solution of diisobutylaluminium hydride in toluene are added and the mixture is stirred for 2 hours while allowing the temperature to rise to 0° C. 40 ml of saturated NH₄Cl solution are added, the mixture is extracted with EtOAc, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/EtOAc mixture (40/60; v/v). 0.62 g of the expected product is obtained after crystallization from ether; m.p.=130° C.

E) N-(tert-butoxycarbonyl)-2-[4-(diethylaminomethyl)phenyl]-1-(pyrid-3-yl)ethylamine.

A solution of 0.61 g of the compound obtained in the preceding step in 20 ml of DCM is cooled to 0° C., 0.311 ml of triethylamine is added, followed by addition of 0.16 ml of methanesulphonyl chloride, and the mixture is stirred for 30 minutes at 0° C. Next, 0.58 ml of diethylamine is added and the mixture is stirred for 3 hours at RT. The reaction mixture is poured into water and extracted with DCM, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.45 g of the expected product is obtained.

F) 2-[4-(Diethylaminomethyl)phenyl]-1-(pyrid-3-yl)ethylamine tris(trifluoroacetate).

A mixture of 0.45 g of the compound obtained in the preceding step and 10 ml of TFA in 10 ml of DCM is stirred for 15 minutes at RT. The reaction mixture is concentrated under vacuum, the residue is taken up in ether, the solvent is decantered off and the expected crude product is used without further purification.

Preparation 2.11 Ethyl 2-amino-3-[4-(N-ethyl-N-methylaminomethyl)phenyl]propionate.

A) Ethyl 2-(benzhydrylideneamino)-3-[4-(N-ethyl-N-methylaminomethyl)phenyl]propionate

A mixture of 1 g of the compound obtained in step A of Preparation 2.2 and 0.29 ml of N-methylethylamine in 10 ml of DMF is cooled to 0° C., 0.307 g of K₂CO₃ is added and the mixture is stirred for 4 hours at 0° C. The reaction mixture is poured into saturated NaCl solution and extracted with EtOAc, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The expected product is obtained and is used without further purification.

B) Ethyl 2-amino-3-[4-(N-ethyl-N-methylaminomethyl)phenyl]propionate

A mixture of the compound obtained in the preceding step and 15 ml of 1N HCl in 15 ml of ether is stirred overnight at RT. After separation of the phases by settling, the aqueous phase is basified to pH 11 by adding Na₂CO₃ and is extracted with DCM, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.43 g of the expected product is obtained, and is used without further purification in EXAMPLE 13.

Preparation 2.12 Ethyl 2-amino-3-[4-(dipropylaminomethyl)phenyl]propionate

(III): Y=—CO₂Et; Z=—CH₂N(nPr)₂

A) Ethyl 2-(benzhydrylideneamino)-3-[4-(dipropylaminomethyl)phenyl]propionate

This compound is prepared according to the procedure described in step A of Preparation 2.11, starting with 1 g of the compound obtained in step A of Preparation 2.2, 0.335 ml of dipropylamine and 0.307 g of K₂CO₃ in 10 ml of DMF. The expected product is obtained, and is used without further purification.

B) Ethyl 2-amino-3-[4-(dipropylaminomethyl)phenyl]propionate

This compound is prepared according to the procedure described in step B of Preparation 2.11, starting with the compound obtained in the preceding step and 15 ml of 1N HCl in 15 ml of ether. The expected product is obtained and is used without further purification.

Preparation 2.13 Ethyl 2-amino-3-[4-(diisopropylaminomethyl)phenyl]propionate

(III): Y=—CO₂Et; Z=—CH₂N(iPr)₂

A) Ethyl 2-(benzhydrylideneamino)-3-[4-(diisopropylaminemethyl)phenyl]propionate

This compound is prepared according to the procedure described in step A of Preparation 2.11, starting with 1 g of the compound obtained in step A of Preparation 2.2, 0.320 ml of diisopropylamine and 0.307 g of K₂CO₃ in 10 ml of DMF. The expected product is obtained and is used without further purification.

B) Ethyl 2-amino-3-[4-(diisopropylaminomethyl)phenyl]propionate

This compound is prepared according to the procedure described in step B of Preparation 2.11, starting with the compound obtained in the preceding step and 30 ml of 1N HCl in 30 ml of ether. 0.5 g of the expected product is obtained.

Preparation 2.14 2-Amino-3-[4-(tert-butylmethylaminomethyl)phenyl]-N-isopropyl-N-methylpropionamide bis(trifluoroacetate), (R) isomer

This compound is prepared according to the procedure described in Preparation 2.3, using 2-(tert-butoxycarbonylamino)-3-[4-(tert-butylmethylaminomethyl)phenyl]propionic acid, (R) isomer, as starting material.

NMR: 0.8–1.2 ppm: mt: 6H; 1.4 ppm: s: 9H; 2.5 ppm: d: 6H; 3.0 ppm: unres.: 2H; 3.9 ppm: mt: 1H; 4.5 ppm: mt: 2H; 7.3–7.5 ppm: mt: 4H.

Preparation 2.15 2-Amino-3-[4-(piperid-1-ylmethyl)phenyl]-N-isopropyl-N-methylpropionamide dihydrochloride

A) 2-(tert-Butoxycarbonylamino)-3-(4-cyanophenyl)-N-isopropyl-N-methylpropionamide

This compound is prepared according to the procedure described in Preparation 1.6 of International patent application WO 97/25315.

B) 2-(tert-Butoxycarbonylamino)-3-(4-formylphenyl)-N-isopropyl-N-methylpropionamide

A solution of 9 g of the compound obtained in the preceding step in 600 ml of a pyridine/AcOH/H₂O mixture (2/1/1; v/v/v) is cooled to 0° C., 47 g of sodium hypophosphite hydrate are added under an argon atmosphere, followed by addition of 8 g of Raney® nickel in water, and the mixture is stirred for 10 minutes at RT. The reaction mixture is heated at 55° C. for 3 hours. After cooling to RT, the mixture is filtered through Celite®, washed with EtOH and then with DCM, and the filtrate is concentrated under vacuum. The residue is extracted with EtOAc, the organic phase is washed with water, with 5% KHSO₄ solution, with saturated NaCl solution, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 7.6 g of the expected product are obtained after crystallization from an iso ether/pentane mixture; m.p.=122° C.

C) 2-(tert-Butoxycarbonylamino)-3-[4-(piperid-1-ylmethyl)phenyl]-N-isopropyl-N-methylpropionamide

0.18 ml of AcOH is added to a mixture of 0.55 g of the compound obtained in the preceding step and 0.172 ml of piperidine in 10 ml of 1,2-dichloroethane, followed by addition of 0.5 g of sodium triacetoxyborohydride, and the mixture is stirred overnight at RT. The reaction mixture is diluted with DCM, the organic phase is washed with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.65 g of the expected product is obtained.

D) 2-Amino-3-[4-(piperid-1-ylmethyl)phenyl]-N-isopropyl-N-methylpropionamide dihydrochloride

3.5 ml of 10N HCl are added to a mixture of 0.65 g of the compound obtained in the preceding step in 10 ml of MeOH and 5 ml of dioxane, and the mixture is stirred overnight at RT. The reaction mixture is concentrated under vacuum, the residue is taken up in EtOH and the solvent is evaporated off under vacuum. The residue is taken up in ether and the precipitate formed is filtered off by suction, after trituration. 0.64 g of the expected product is obtained; m.p.=165° C. (dec).

Preparation 2.16 2-Amino-3-[4-(N-cyclopentyl-N-methylaminomethyl)phenyl]-N-isopropyl-N-methylpropionamide bis(trifluoroacetate)

A) 2-(tert-Butoxycarbonylamino)-3-[4-(N-cyclopentyl-N-methylaminomethyl)phenyl]-N-isopropyl-N-methylpropionamide

0.164 ml of AcOH is added to a mixture of 0.5 g of the compound obtained in step B of Preparation 2.15 and 0.214 g of N-methylcyclopentylamine in 10 ml of 1,2-dichloroethane, followed by addition of 0.456 g of sodium triacetoxyborohydride, and the mixture is stirred overnight at RT. The reaction mixture is diluted with DCM, the organic phase is washed with saturated NaHCO₃ solution and the solvent is evaporated off under vacuum. The residue is taken up in EtOAc and extracted with pH 4 buffer, the acidic aqueous phase is washed with EtOAc, basified by addition of saturated NaHCO₃ solution and extracted with DCM, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.31 g of the expected product is obtained.

B) 2-Amino-3-[4-(N-cyclopentyl-N-methylaminomethyl)phenyl]-N-isopropyl-N-methylpropionamide bis(trifluoroacetate)

A mixture of 0.309 g of the compound obtained in the preceding step and 10 ml of TFA in 10 ml of DCM is stirred for 2 hours at RT. The reaction mixture is concentrated under vacuum. The product obtained is used without further purification in Example 36.

Preparation 2.17 2-Amino-3-[4-(4-hydroxypiperid-1-ylmethyl)phenyl]-N-isopropyl-N-methylpropionamide bis(trifluoroacetate).

A) 2-(tert-Butoxycarbonylamino)-3-[4-(4-hydroxypiperid-1-ylmethyl)phenyl]-N-isopropyl-N-methylpropionamide

0.164 ml of AcOH is added to a mixture of 0.5 g of the compound obtained in step B of Preparation 2.15 and 0.146 g of 4-hydroxypiperidine in 10 ml of 1,2-dichloroethane, followed by addition of 0.456 g of sodium triacetoxyborohydride, and the mixture is stirred for 24 hours at RT. The reaction mixture is diluted with DCM, the organic phase is washed with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.622 g of the expected product is obtained.

B) 2-Amino-3-[4-(4-hydroxypiperid-1-ylmethyl)phenyl]-N-isopropyl-N-methylpropionamide bis(trifluoroacetate)

A mixture of 0.622 g of the compound obtained in the preceding step and 10 ml of TFA in 10 ml of DCM is stirred for 1 hour at RT. The reaction mixture is concentrated under vacuum. The expected product is obtained, and is used without further purification.

Preparation 2.18 (R) 1-[2-Amino-3-(4-cyanophenyl)propionyl)pyrrolidine trifluoroacetate

A) Ethyl 2-(N-Boc)amino-3-(4-cyanophenyl)propionate

26 g of Boc₂O dissolved in 100 ml of DCM are added gradually to a solution of 25.5 g of ethyl 2-amino-3-(4-cyanophenyl)propionate hydrochloride and 13.9 ml of Et₃N in 400 ml of DCM. After stirring for 6 hours at RT, the reaction medium is washed with a KHSO₄/K₂SO₄ solution, with saturated NaHCO₃ solution and with saturated NaCl solution. After drying over Na₂SO₄ and evaporation of the DCM, the residue is triturated in heptane to give 29 g of a white powder.

B) Ethyl (R) 2-(N-Boc)amino-3-(4-cyanophenyl)propionate

A mixture of 24 g of the product obtained in the preceding step and 8.4 g of NaHCO₃ in 900 ml of EtOAc and 500 ml of H₂O is treated with 2 ml of Alcalase® for 24 hours at RT. The 2 phases are separated by settling; the EtOAc phase is washed again with 100 ml of a 10% NaHCO₃ solution, which is combined to the first aqueous phase, and the aqueous phase is washed again with 100 ml of EtOAc, which are combined with the first EtOAc phase. The EtOAc phase thus obtained is dried over Na₂SO₄ and then evaporated to dryness; 12.45 g of compound B are obtained.

α_(D) ²⁵=+8.8° (c=1; MeOH)

C) (R) 2-(N-Boc)amino-3-(4-cyanophenyl)propionic acid

43 ml of a 1N NaOH solution are added to 12.18 g of compound B dissolved in 180 ml of MeOH, and the mixture is stirred for 1 hour at RT. Next, 43 ml of 1N HCl solution are added and 150 ml of methanol are evaporated off, the residue is then taken up in EtOAc and washed with water and then with saturated NaCl solution. 11 g of the expected compound are obtained, after crystallization from an Et₂O/heptane mixture.

α_(D) ²⁵=+−9.5° (c=1; MeOH)

D) N-hydroxysuccinimide (R) 2-(N-Boc)amino-3-(4-cyanophenyl)propionate

4.2 g of NSuOH are added to 10 g of the acid obtained above dissolved in 10 ml of dioxane, followed by addition over 20 minutes of 8.62 g of DCC dissolved in 30 ml of dioxane. After stirring overnight at RT, the DCU formed is filtered off and washed with dioxane. The filtrate is evaporated to dryness and the residue is triturated in ether to give a solid, which is filtered off and dried. 12.09 g of the expected compound are obtained.

α_(D) ²⁵+27.1° (c=1; MeOH)

E) (R) 1-[2-(N-Boc)amino-3-(4-cyanophenyl)propionyl]pyrrolidine.

2.6 ml of pyrrolidine dissolved in 20 ml of acetonitrile are added over 10 minutes to 11.6 g of the compound obtained in the above step dissolved in 150 ml of acetonitrile plus 20 ml of DMF. After stirring overnight at RT, a small amount of insoluble material is removed and the filtrate is concentrated under vacuum. The residue is taken up in EtOAc and washed with KHSO₄/K₂SO₄ solution, with saturated NaHCO₃ solution and with saturated NaCl solution; after drying over Na₂SO₄, the EtOAc is evaporated off under vacuum and the residue is triturated in ether to give 9.3 g of the expected compound in the form of a white solid.

α_(D) ²⁵=−29.2° (c=1; MeOH)

F) (R) 1-[2-Amino-3-(4-cyanophenyl)propionyl]pyrrolidine trifluoroacetate.

8.7 g of the product obtained in the preceding step are stirred for 35 minutes in a mixture of 50 ml of DCM and 50 ml of TFA. After evaporation to dryness, the residue is taken up in isopropanol and re-evaporated to dryness, to give 8.67 g of the expected compound in solid form.

α_(D) ²⁵=−46° (c=1; MeOH)

Preparation 2.19 (R) 2-amino-3-(4-diisopropylaminomethylphenyl)-N-isopropyl-N-methylpropionamide trifluoroacetate

A) (R) 2-(N-Boc)amino-3-(4-cyanophenyl)-N-isopropyl-N-methylpropionamide

2 g of the acid obtained in Preparation 2.18, step C are placed in 20 ml of DCM in the presence of 750 μl of isopropylmethylamine, 1.26 ml of DIPEA and 3.2 g of BOP, and the mixture is then stirred for 4 hours at RT. The reaction mixture is concentrated to dryness and is then extracted with EtOAc, followed by washing successively with water, with pH 2 buffer solution, with saturated NaHCO₃ solution and with saturated NaCl solution. 2.40 g of the expected compound are obtained.

B) (R) 2-(N-Boc)amino-3-(4-formylphenyl)-N-isopropyl-N-methylpropionamide

2.4 g of the compound from the preceding step are placed in 130 ml of solvent consisting of a pyridine/AcOH/water mixture (2/1/1; v/v/v); 2.45 g of Raney nickel and 12.12 g of NaH₂PO₂ are added and the mixture is heated at 55° C. for 3 hours. The reaction mixture is filtered through Celite and the filtrate is concentrated. The residue is extracted with EtOAc and then washed successively with water, with pH 2 buffer solution, with saturated NaHCO₃ solution and with saturated NaCl solution. After concentration and drying, the residue is chromatographed on silica gel, eluting with a DCM/MeOH mixture (100/1; v/v). 1.60 g of the expected compound are obtained.

C) (R) 2-(N-Boc)amino-3-(4-diisopropylaminomethyl)-N-isopropyl-N-methylpropionamide

A mixture containing 0.5 g of the compound obtained in the preceding step, 402 μl of diisopropylamine and 608 mg of NaBH(OAc)₃ in 20 ml of DCE is stirred for 24 hours at RT. The reaction mixture is concentrated to dryness, the residue is taken up in a water/EtOAc mixture and is then extracted with DCM and washed with saturated NaCl solution. 0.296 g of the expected compound is obtained.

D) (R) 2-Amino-3-(4-diisopropylaminomethylphenyl)-N-isopropyl-N-methylpropionamide trifluoroacetate

296 mg of the compound from the preceding step are placed in 5 ml of TFA and 10 ml of DCM, and the mixture is stirred for 3 hours at RT. The reaction mixture is concentrated to dryness, the residue is triturated in pentane, the solvent is decantered off and the oil formed is then recovered. The compound obtained is used in crude form in Example 39.

By working according to the methods described above, the compounds of formula (III) described in Table V below are prepared:

TABLE V (III)′ = (III) or (XXXVII)

NMR Preparation T Y′ Z or m.p. ° C. 2.20 H CO₂H

NMR 2.212HCl H

NMR 2.22 Boc

68–70° C.NMR 2.232HCl H

170° C. 2.24 Boc

NMR 2.25 Boc

102° C.NMR 2.26 Boc

85° C. 2.27 Boc

75° C. 2.282HCl H

—CN 267° C. 2.29 H

—CN 62° C.NMR 2.302HCl H

2.31 Boc

NMR 2.32 Boc

128–130° C.NMR 2.33 Boc

NMR 2.34 Boc

NMR 2.352HCl H

166° C. 2.36 Boc

66–68° C.NMR 2.37 Boc

99–102° C.NMR 2.38 Boc

NMR 2.39 H

—CN 92° C. 2.40 H

—CN

Preparation 2.20

NMR (DMSO+TFA): 2.8 ppm: s: 3H; 3.1 ppm: mt: 2H; 3.5 ppm: unres.: 8H; 4.2 ppm: t: 1H; 4.4 ppm: s: 2H; 7.35 ppm: d: 2H; 7.6 ppm: d: 2H.

Preparation 2.21

NMR: 1.25 ppm: s: 9H; 1.40–1.65 ppm: unres.: 4H; 2.40–4.60 ppm: mt: 10H; 7.10–7.60 ppm: mt: 4H.

Preparation 2.22

NMR: 0.85–1.00 ppm: t: 6H; 1.20 ppm: s: 9H; 2.30–4.30 ppm: unres.: 8H; 4.70 ppm: q: 1H; 7.10–7.75 ppm: unres.: 10H.

Preparation 2.24

NMR (DMSO+TFA): 1.0 ppm: mt: 6H; 1.2 ppm: s: 9H; 1.8 ppm: unres.: 14H; 2.6 ppm: d: 3H; 3.0 ppm: unres.: 6H; 4.1–4.7 ppm: unres.: 4H; 7.3 ppm: q: 4H.

Preparation 2.25

NMR: 1.0 ppm: s: 9H; 1.2 ppm: s: 9H; 1.9 ppm: s: 3H; 2.8 ppm: d: 2H; 3.4 ppm: s: 2H; 4.6 ppm: mt: 1H; 7.0–7.3 ppm: mt: 9H; 7.4 ppm: d: 1H.

Preparation 2.29

NMR: 2.9 ppm: mt: 2H; 4.0 ppm: t: 1H; 6.1 ppm: d: 1H; 6.3 ppm: d: 1H; 7.3 ppm: d: 2H; 7.5 ppm: s: 1H; 7.6 ppm: d: 2H.

Preparation 2.31

NMR: 0.85 ppm: t: 6H; 1.20 ppm: s: 9H; 2.40–4.30 ppm: unres.: 11H; 6.90–8.05 ppm: unres.: 9H.

Preparation 2.32

NMR: 0.90 ppm: t: 6H; 1.20 ppm: s: 9H; 2.40 ppm: q: 4H; 3.20–3.70 ppm: mt: 7H; 5.10 ppm: q: 1H; 7.10–7.70 ppm: mt: 9H.

Preparation 2.33

NMR (DMSO+TFA): 1.15 ppm: t: 6H; 1.20 ppm: s: 9H; 1.60–1.80 ppm: mt: 2H; 2.70–4.40 ppm: unres.: 19H; 7.25–7.45 ppm: mt: 4H.

Preparation 2.34

NMR (DMSO+TFA): 1.10 ppm: t: 6H; 1.20 ppm: s: 9H; 2.60–4.60 ppm: unres.: 20H; 7.20–7.45 ppm: mt: 4H.

Preparation 2.36

NMR: 1.00 ppm: s: 9H; 1.15 ppm: s: 9H; 2.70–4.60 ppm: unres.: 8H; 7.00–8.40 ppm: unres.: 9H.

Preparation 2.37

NMR: 0.90 ppm: t: 6H; 1.20 ppm: s: 9H; 2.35 ppm: q: 4H; 2.80–3.40 ppm: unres.: 4H; 4.80–5.00 ppm: mt: 1H; 7.00–7.50 ppm: unres.: 9H; 12.1 ppm: bs: 1H.

Preparation 2.38

NMR: 1.2 ppm: s: 9H; 1.2–1.8 ppm: unres.: 8H; 1.9 ppm: s: 3H; 2.6 ppm: mt: 1H; 2.8 ppm: d: 2H; 3.3 ppm: s: 2H; 4.6 ppm: mt: 11H; 7.0–7.2 ppm: mt: 9H; 7.4 ppm: d: 1H.

Preparation 2.41 (R) 2-Amino-3-(4-((2,6-dimethyl-1-piperidyl)methyl)phenyl-N-isopropyl-N-methylpropanamide, 2TFA

A)

A mixture containing 500 mg of the compound described in Preparation 2.19, step B, 390 μl of (cis)-2,6-dimethylpiperidine and 608 mg of NaBH(OAc)₃ is stirred for 48 hours at RT. The mixture is concentrated to dryness and then diluted with 30 ml of EtOAc and extracted with a pH 4 buffer solution. The aqueous phase is extracted with DCM and then washed with saturated NaHCO₃ solution and with saturated NaCl solution. 411 mg of the expected compound are obtained.

B)

411 mg of the compound obtained in the preceding step and 10 ml of TFA in 10 ml of DCM are stirred for 4 hours at RT. The mixture is concentrated to dryness and then triturated in a pentane/ether mixture. After decantation and drying, 0.480 g of the expected compound is obtained in the form of an oil.

Preparation 2.42 (R) 2-N-Boc)amino-3-(4-((3,3-dimethyl-1-piperidyl)methylphenyl)-N-isopropyl)-N-methylpropanamide

497 mg of the compound described in Preparation 2.19, step B are placed in 10 ml of DCE and 165 μl of AcOH and 455 mg of NaBH(OAc)₃ are added. After stirring overnight at RT, the reaction medium is concentrated and then taken up in Et2O/H₂O and extracted with a pH 4 buffer. The aqueous phases are basified to pH 8 with caustic soda and then extracted with DCM and washed with saturated NaCl solution. 0.168 g of the expected compound is obtained.

Preparation 2.43 (R) 2-(N,Boc)amino-3-(4-((4,4-difluoro-1-piperidyl)methyl)phenyl-N-isopropyl-N-methylpropanamide

This compound is prepared as described in Preparation 2.41, starting with the compound of Preparation 2.19, step B and 4,4-difluoropiperidine.

Preparation 2.44 2-(R)-2-(N-Boc)amino-3-(4-((2,6-dimethyl-1-piperidyl)methyl)phenyl)propanoic acid

This compound is prepared by following Schemes 9 and 10.

A) Ethyl 2-(R)-2-(N-Boc)amino-3-(4-formylphenyl)propanoate

4 g of the compound from Preparation 2.18, step B are placed in 300 ml of a pyridine/AcOH/H₂O mixture (2/1/1; v/v/v) under argon. This mixture is treated with 5 g of Raney nickel and 30 g of NaH₂PO₂.H₂O for 6 hours at 55° C. The reaction mixture is filtered through Celite® and then concentrated. The residue is taken up in EtOAc, washed with H₂O, with 5% KHSO₄, with H₂O, with saturated NaHCO₃ solution and with saturated NaCl solution and then dried and concentrated. 3.91 g of the expected product are obtained in the form of an oil.

NMR: 1.2: t: 3H; 1.4: s: 9H; 2.9–3.2: mt: 2H; 4.0–4.4: mt: 3H; 7.4: d: 1H; 7.55: d: 2H; 7.9: d: 2H; 10.0: s: 1H.

B) Ethyl 2-(R)-2-(N-Boc)amino-3-(4-((2,6-dimethyl-1-piperidyl)methyl)phenyl-propanoate

3.9 g of the compound obtained in step B are placed in 30 ml of dichloroethane and the solution is treated with 6.7 g of NaHB(OAc)₃ and 4 ml of (cis)-2,6-dimethylpiperidine for 24 hours at RT. The reaction mixture is concentrated and the residue is taken up in ether and then extracted with 5% KHSO₄ and then with water. The aqueous phases are basified to pH 8 by adding NaHCO₃ and extracted with DCM, and the organic phase is dried and concentrated to give 3 g of the expected product in the form of an oil.

NMR: 0.9: d: 6H; 1.0: t: 3H; 1.05–1.8: mt: 15H; 2.3: unres.: 2H; 2.6–2.9: mt: 2H; 3.6: s: 2H; 2.9–4.1: mt: 3H; 7.0–7.2: mt: 5H.

C) (R)-2-(N-Boc)amino-3-(4-((2,6-dimethyl-1-piperidyl)methyl)phenyl)propanoic acid

3 g of the compound obtained in the preceding step are placed in 20 ml of MeOH and 20 ml of dioxane, followed by dropwise addition of 7.5 ml of 1N NaOH, and the mixture is stirred for 1 hour at RT. 7.5 ml of 1N HCl are added and the mixture is then concentrated to dryness. An azeotropic distillation is carried with absolute EtOH and toluene. The mixture is taken up in DCM, dried and filtered to give 2.7 g of the expected compound in the form of a dry foam.

NMR: 0.9: d: 6H; 1.0–1.4: mt: 15H; 2.4: unres.: 2H; 2.6–3.0: mt: 2H; 3.65: s: 2H; 4.0: unres.: 1H; 7.0: d: 1H; 7.2: d: 2H.

Preparation 2.45 2-(R)-2-(N-Boc)amino-3-(4-(((2-fluoroethyl)(ethyl)amino)methyl)phenyl)-N-isopropyl-N-methylpropanamide

This compound is prepared according to Scheme 9a (step b) of the above description.

A) 2-(R)-2-(N-Boc)amino-3-(4-(((ethylamino)methyl)phenyl)-N-isopropyl-N-methyl)propanamide

520 mg of 2-(R)-2-(N-Boc)-3-(4-formylphenyl)-N-isopropyl-N-methylpropanamide are placed in 20 ml of DCE and treated with 3 ml of ethaneamine and 633 mg of NaHB(OAc)₃ plus 1 ml of AcOH, overnight at RT. The reaction mixture is concentrated and then taken up in a water/ether mixture. The aqueous phase is basified to pH 8 with NaHCO₃ and then extracted with DCM. 350 mg of the expected compound are obtained in the form of an oil. The NMR spectrum is in accordance with the structure of the compound.

B)

310 mg of the compound from the preceding step are dissolved in DMF (10 ml) and treated with 2-fluoro-1-iodoethane (143 mg) in the presence of K₂CO₃ (114 mg) for 48 hours at RT. The reaction is concentrated and the residue is taken up in EtOAc and extracted with H₂O and then with 5% KHSO₄. The aqueous phase is basified to pH 8 with NaHCO₃ and then extracted with CH₂Cl₂. 115 mg of the expected product are obtained in the form of an oil.

NMR

Preparation 2.46 2-(R)-2-(N-Boc)amino-3-(4-(((cyclopropyl)(isopropyl)amino)methyl)phenyl)-N-isopropyl-N-methyl)propanamide

This compound is prepared according to Scheme 9a (step c).

A) 2-(R)-2-(N-Boc)amino-3-(4-((cyclopropylamino)methyl)phenyl)-N-isopropyl-N-methyl)propanamide

This compound is obtained by reacting cyclopropylamine with 2-(R)-2-(N-Boc)-3-(4-formylphenyl)-N-isopropyl-N-methylpropanamide according to the procedure described in step A of the above preparation.

B) 2-(R)-2-(N-Boc)amino-3-(4-(((cyclopropyl)(isopropyl)amino)methyl)phenyl)-N-isopropyl-N-methyl)propanamide

220 mg of the compound from the preceding step and 125 μl of acetone are placed in 10 ml of DCE and treated with 180 mg of NaHB(OAc)₃ for 24 hours at RT. The reaction mixture is concentrated and is then taken up in ether and extracted with 5% KHSO₄ solution and then with H₂O. The aqueous phases are basified to pH 8 with NaHCO₃ and then extracted with DCM and dried. 105 mg of the expected compound are obtained in the form of an oil.

By working according to the preparations described above, the intermediate compounds described in the table below are prepared. (The reaction process used for the preparation is indicated in the right-hand column.)

TABLE VI

Preparations (stereochemistry) CONR₈R₉ —CH₂NR₁₁R₁₂ m.p. ° C. or NMR Process 2.47(R)

NMR a 2.48

NMR a 2.49

NMR a 2.50

NMR a 2.51

NMR a 2.52(R)

NMR a 2.53

NMR c 2.54(R)

crude productused c 2.55(R)

NMR a 2.56

crude productused a 2.57

NMR a 2.58

NMR d 2.59

NMR a 2.60

NMR a 2.61

NMR a 2.62

NMR a 2.63

NMR a 2.64

NMR a 2.65(R)

NMR a 2.66(R)

NMR d 2.67

NMR a 2.68

NMR c 2.69(R)

NMR a 2.70(R)

NMR a 2.71

NMR a 2.72(R)

NMR a 2.73

NMR d 2.74(R)

NMR d 2.75(R)

NMR d 2.76

NMR a 2.77(R)

NMR a 2.78

NMR a 2.79

NMR a 2.80

NMR a 2.81(R)

NMR a 2.82

103° C. a 2.83(R)

NMR a 2.84

NMR a 2.85

NMR a 2.86(R)

NMR a 2.87

crude product d 2.88

130° C. d 2.89(R)

NMR a 2.90(R)

NMR a 2.91(R)

crude productused a 2.92(R)

NMR d 2.93(R)

NMR d 2.94(R)

NMR d 2.95(R)

NMR d 2.96(R)

NMR d 2.97(R)

NMR a 2.98(R)

NMR d 2.99(R)

NMR d 2.100(R)

152° C. d 2.101(R)

NMR d 2.102(R)

NMR a 2.103(R)

NMR d 2.104(R)

120° C. a 2.105(R)

NMR a 2.106

NMR a 2.107(R)

NMR a 2.108

NMR a 2.109(R)

NMR a 2.110(R)

NMR a 2.111(R)

NMR a 2.112(R)

NMR a a This compound is prepared from a compound (III) in which Z = CN and Y = CONR₈R₉, using the process described in Scheme 9 to obtain Z = CH₂NR₁₁R₁₂. b This compound is prepared from a compound (III) in which Z = CN and Y = CONR₈R₉, using the process described in Scheme 9a (step b) to obtain Z = CH₂NR₁₁R₁₂. c This compound is prepared from a compound (III) in which Z = CN and Y = CONR₈R₉, using the process described in Scheme 9a (step c) to obtain Z = CH₂NR₁₁R₁₂. d This compound is prepared from a compound (XXXVI) in which Y = CO₂R′, using the process described in Scheme 10 to obtain compound (III) with Y = CONR₈R₉.

Preparation 2.113 (R)2-(N-Boc)amino-3-(4-(3,6-dihydro)-1(2H)-pyridylmethyl)phenyl)-1-(1,3-thiazol-2-yl)-1-propanone

A) 2-(N-Boc)amino-3-(4-cyanophenyl)-N-methoxy-N-methylpropanamide

2 g of (N-Boc)-4-cyanophenylalanine, 2.32 g of TBTU, 2.40 ml of DIPEA and 806 mg of N,O-dimethylhydroxylamine hydrochloride are mixed together in 30 ml of DCM. After stirring for 24 hours at RT, the reaction mixture is concentrated to dryness and the residue is then extracted with EtOAc. The organic phase is washed with a pH 2 buffer solution, a saturated NaHCO₃ solution and then a saturated NaCl solution. The expected compound crystallizes from a mixture of isopropyl ether and pentane (1.89 g).

B) 4-(2-(N-Boc)amino-3-oxo-3-(1,3-thiazol-2-yl)propyl)benzonitrile

A solution of 1,3-thiazole in 50 ml of THF at −78° C. is prepared, to which are added dropwise 9.57 ml of 2.5 M butyllithium in hexane and then the compound from the preceding step dissolved in 25 ml of THF. After stirring for 1 hour at −78° C., 50 ml of pH 2 buffer solution are added and the mixture is stirred for a further 1 hour at RT. The reaction medium is extracted with EtOAc and the organic phase is then washed with a pH 2 buffer and then with saturated NaCl solution. The mixture is evaporated to dryness and the residue is then chromatographed on silica, eluting with a heptane/acetone mixture (8/2; v/v) to give 1.65 g of the expected compound.

C) 4-(2-(N-Boc)amino)-3-oxo-3-(1,3-thiazol-2-yl)propyl)benzaldehyde

1.65 g of the compound from the preceding step, 3 g of Raney nickel and 14 g of NaH₂PO₂.H₂O are placed in 100 ml of a pyridine/acetic acid/water mixture (2/1/1; v/v/v) and the mixture is heated at 55° C. for 3 hours. The nickel is removed by decantation and the medium is then concentrated. The reaction medium is extracted with EtOAc and the organic phase is then washed with a pH 2 buffer, a saturated NaHCO₃ solution and saturated NaCl solution. The resulting solution is evaporated to dryness and the residue is then chromatographed on silica, eluting with a heptane/AcOEt mixture (6/4; v/v) to give 400 mg of the expected compound.

D) (R)-2-(N-Boc)amino-3-(4-(3,6-dihydro)-1(2H)-pyridylmethyl)phenyl)-1-(1,3-thiazol-2-yl)-1-propanone

400 mg of the compound from the preceding step, 105 μl of 1,2,3,6-tetrahydropyridine and 3.65 mg of NaBH(OAc)₃ are placed in 20 ml of DCE and the mixture is stirred overnight at RT. The reaction mixture is concentrated to dryness and the residue is then taken up in a pH 2 buffer and washed with ether. The acidic phase is extracted with DCM and then washed with saturated NaHCO₃ solution. 0.283 g of the expected compound is obtained.

Preparation 2.114 2-(N-Boc)amino-N-isopropyl-N-methyl-3-(4-(1-piperidylmethyl)phenyl)propanethioamide

1.33 g of the compound from Preparation 2.15, step C are placed in 40 ml of anhydrous toluene and the solution is treated with 1.29 g of Lawesson's reagent at 80° C., under argon, for 4 hours. The reaction medium is concentrated and then chromatographed on silica, eluting with a DCM/MeOH/NH₄OH mixture (100/4/0.3; v/v/v) to give 0.185 g of the expected compound.

Preparation 3.1

A) 3-Phenylaminopropionic acid, TFA

2 g of tert-butyl 3-phenylaminopropionate are placed in 30 ml of TFA and 20 ml of CH₂Cl₂, the mixture is stirred for 4 hours at RT and then concentrated to dryness.

B)

The compound obtained in the preceding step is mixed, at 0° C., in 30 ml of DCM, with 3.80 g of 2-amino-3-(4-((diethylamino)methyl)phenyl)-N-isopropyl-N-methylpropanamide and 5.02 ml of TEA, 4 g of BOP are added and the mixture is then stirred for 4 hours at RT and concentrated to dryness. The residue is extracted with ether and washed with water, with saturated NaHCO₃ solution and then with saturated NaCl solution. The resulting solution is dried over sodium sulphate and then chromatographed on silica, eluting with DCM/MeOH (95/5; v/v)+3 ml of NH₄OH per liter of eluent. 1.924 g of the expected compound are obtained.

NMR (DMSO+TFA): 0.8–1.2 ppm: mt: 12H; 2.3–3.0 ppm: mt: 11H; 3.3 ppm: unres.: 2H; 4.0 ppm: mt: 1H; 4.2 ppm: s: 2H; 4.4 ppm: mt: 1H; 7.0–7.4 ppm: mt: 9H.

Preparation 3.2

1.11 g of 3-(N-Boc)amino-3-(benzo[1,3]dioxol-5-ylpropionic acid, 1.508 g of 2-amino-3-(4-(diethylaminoethyl)phenyl)-1-(pyrrolidin-1-yl)propan-1-one (Preparation 2.8), 1.60 g of BOP and 1.50 ml of TEA are placed in 20 ml of DCM and stirred for 2 hours at RT. After concentrating to dryness, the residue is taken up in EtOAc and washed with water, with saturated NaHCO₃ solution and then with saturated NaCl solution. The resulting solution is dried over sodium sulphate and concentrated. The residue is triturated in pentane and the precipitate formed is filtered off by suction. The product is chromatographed on silica, eluting with a DCM/MeOH mixture (95/5; v/v)+4 ml of NH₄OH per liter of eluent. 1.402 g of the expected compound are obtained.

B)

1.4 g of the compound from the preceding step are placed in 15 ml of TFA and 20 ml of DCM and stirred for 2 hours at RT. The reaction mixture is concentrated to dryness and then taken up in DCM and washed with 1N NaOH solution. The solution is dried over sodium sulphate and concentrated. The oil obtained is crystallized in a refrigerator.

NMR: 0.8–1.1 ppm: mt: 12H; 2.2–2.6 ppm: mt: 9H; 2.8 ppm: mt: 2H; 3.5 ppm: s: 2H; 4.1 ppm: t: 1H; 4.5–5.0 ppm: mt: 2H; 6.0 ppm: s: 2H; 6.8–7.3 ppm: mt: 7H; 8.5 ppm: mt: 1H.

By working as described in Preparations 1, 2 and 3 above, the compounds of formula (IV), (V) or (VII) collated below are prepared:

TABLE VII (IV) or (V) or (VII) or (IX)

Preparations X′ R₂ R₃ Y′ Z′ 3.32HCl H H

3.4

H

CHO 3.5

H

CHO 3.6

H

CO₂H

3.7

H

CHO

Preparation 3.3

NMR (DMSO+TFA): 1.2 ppm: mt: 6H; 1.6 ppm: unres.: 4H; 2.4–3.2 ppm: mt: 12H; 4.2 ppm: s: 2H; 4.5 ppm: mt: 2H; 7.0–7.5 ppm: mt: 9H.

Preparation 3.4

NMR: 2.2 ppm: t: 2H; 2.4 ppm: s: 3H; 2.8–3.1: mt: 2H; 3.7 ppm: t: 2H; 5.0 ppm: unres.: 1H; 5.9 ppm: s: 2H; 6.4: dd: 1H; 6.6 ppm: d: 1H; 6.7 ppm: d: 1H; 7.1–7.5 ppm: mt: 6H; 7.7 ppm: d: 2H; 8.4 ppm: mt: 3H; 9.9 ppm: s: 1H.

Preparation 3.5

NMR: 2.2 ppm: t: 2H; 2.4 ppm: s: 3H; 2.8–3.1 ppm: mt: 2H; 3.8 ppm: t: 2H; 5.0 ppm: mt: 1H; 6.1: d: 1H; 6.3 ppm: mt: 1H; 7.0–7.6 ppm: mt: 10H; 7.7 ppm; d: 2H; 8.3 ppm: d: 1H; 9.9 ppm: s: 1H.

Preparation 3.7

NMR: 2.2 ppm: t: 2H; 2.4 ppm: s: 3H; 2.7–3.1 ppm: mt: 2H; 3.8 ppm: t: 2H; 5.0 ppm: mt: 1H; 7.0–7.8 ppm: mt: 13H; 8.3–8.5 ppm: mt: 3H; 9.9 ppm: s: 1H.

Preparation 3.8

A mixture containing 480 mg of the compound from Preparation 2.41, 259 mg of the compound from Preparation 1.13, 370 mg of BOP and 440 μl of DIPEA in 10 ml of DCM is stirred at RT for 3 hours. The medium is concentrated to dryness and is then taken up in EtOAc, washed with water and extracted with pH 2 buffer, and the aqueous phase is then basified to pH 8 with saturated NaHCO₃ solution. This mixture is extracted with DCM and then washed with saturated NaCl solution to give 0.437 g of the expected compound.

NMR: 0.5 to 1.6 ppm: unres.: 27H; 2.2 to 3.6 ppm: unres.: 10H; 3.8 to 5 ppm: unres.: 4H; 5.9 ppm: d: 2H; 6.6 to 7.3 ppm: unres.: 8H; 8.1 ppm: t: 1H.

B) 437 mg of the compound obtained in the preceding step and 10 ml of TFA in 20 ml of DCM are stirred for 4 hours at RT. The mixture is concentrated to dryness and then crystallized from ethyl ether/pentane mixture. The residue is taken up in a DCM/saturated NaHCO₃ solution mixture; the organic phase is dried and concentrated to dryness under vacuum to give 343 mg of the expected compound.

Preparation 3.9

163 mg of the compound obtained in Preparation 2.42 are placed in 5 ml of DCM with 3 ml of TFA and are stirred for 1 hour at RT. The medium is concentrated and then triturated in iPr₂O and decanted to recover the oil formed. The oil formed is taken up in 10 ml of DCM, 115 mg of the compound from Preparation 1.13 and 170 mg of BOP are then added and the mixture is maintained at pH 7 by addition of DIPEA. After the usual work-up, 0.225 g of the expected compound is obtained, which is used in crude form in the following step.

Preparation 3.10

This compound is prepared according to the methods described above, starting with the compound from Preparation 2.43 and the compound from Preparation 1.13.

EXAMPLE 1 N-[1-(4-Aminomethylbenzyl)-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride

A) N-[1-(4-Cyanobenzyl)-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

0.25 ml of triethylamine is added to a mixture of 0.715 g of the compound from Preparation 2.1 in 15 ml of acetonitrile, followed by addition of 0.71 g of the compound from Preparation 1.1 and 0.45 g of DCC, and the mixture is stirred for 5 hours at RT. The reaction mixture is concentrated under vacuum, the residue is taken up in acetone, the DCU is filtered off and the filtrate is concentrated under vacuum. The residue is triturated in ether and the solvent is then decanted off (several times). 0.61 g of the expected product is obtained after drying under vacuum over P₂O₅; m.p.=195–200° C.

NMR: δ (ppm): 1.40–170: unres.: 4H; 2.30–3.40: unres.: 8H; 4.40–4.60: unres.: and 4.60–4.70: unres.: 2H; 6.75–8.15: unres.: 16H.

B) N-[1-(4-Aminomethylbenzyl)-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride.

1 g of the compound obtained in the preceding step is dissolved in 4.5 ml of concentrated aqueous ammonia, 20 ml of MeOH, 5 ml of dioxane and 20 ml of toluene, 0.9 g of Raney® nickel is added and the mixture is hydrogenated at 50° C. under a pressure of 50 bar for 7 hours. The catalyst is filtered off through Celite® and washed with MeOH/chloroform solution, and the filtrate is concentrated under vacuum. The residue is taken up in ether and the precipitate formed is filtered off by suction. The product obtained is taken up in hydrochloric ether and the precipitate formed is filtered off by suction and dried. 0.85 g of the expected product is obtained.

MH⁺=585

EXAMPLE 2 N-[1-[4-(tert-Butylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride

1.46 ml of DIPEA are added to a mixture of 1.06 g of the compound obtained in Preparation 1.1 in 15 ml of DMF, followed by addition of 1.49 g of the compound obtained in Preparation 2.2 and 1.38 g of BOP, and the mixture is stirred for 2 hours 30 minutes at RT, while maintaining the pH at 6 by adding DIPEA. The reaction mixture is extracted with EtOAc, the organic phase is washed with water, with 0.2N NaOH, with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a chloroform/MeOH/NH₄OH mixture (85/15/0.2; v/v/v). The product obtained is dissolved in 10 ml of MeOH, 0.2 ml of 10N HCl is added and the mixture is concentrated under vacuum. The residue is chromatographed on Sephadex® LH20, eluting with a DCM/MeOH mixture (60/40; v/v). 0.66 g of the expected product is obtained.

NMR: δ (ppm): 1.3: s: 9H; 1.5–1.9: unres.: 4H; 2.3–3.4: unres.: 8H; 3.95: d: 2H; 4.4–4.9: unres.: 2H; 6.8–8.6: unres.: 18H.

EXAMPLE 3 N-[1-[4-(N-Propyl-N-methylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

0.458 ml of triethylamine is added to a mixture of 0.39 g of the compound obtained in Preparation 1.1 and 0.41 g of the compound obtained in Preparation 2.3 in 10 ml of DCM, followed by addition of 0.533 g of BOP, and the mixture is stirred for 4 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with water, with saturated NaCl solution, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.3 g of the expected product is obtained after crystallization from ether.

NMR: δ (ppm): 0.75 t: 3H; 1.2–1.7: unres.: 6H; 2.0: s: 3H; 2.15: t: 2H; 2.25–3.5: unres.: 10H; 4.1 to 4.8: unres.: 2H; 6.7 to 8.5: unres.: 18H.

EXAMPLE 4 N-[1-[4-[N,N-bis(2-hydroxyethyl)aminomethyl]benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

1.3 ml of DIPEA are added to a mixture of the compound obtained in Preparation 2.4 in 15 ml of DMF, followed by addition of 0.96 g of the compound obtained in Preparation 1.1 and 1.33 g of BOP, and the mixture is stirred for 2 hours at RT, while maintaining the pH at 6 by adding DIPEA. The reaction mixture is extracted with EtOAc, the organic phase is washed with water, with 0.5N NaOH, with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/MeOH/NH₄OH mixture (90/10/0.2; v/v/v). The product obtained is chromatographed on Sephadex® LH 20, eluting with a DCM/MeOH mixture (60/40; v/v). 0.44 g of the expected product is obtained.

NMR: δ (ppm): 1.3 to 1.7: unres.: 4H; 2.2 to 3.6: unres.: 18H; 4.2 to 4.8: unres.: 4H; 6.8 to 8.4: m: 18H.

EXAMPLE 5 N-[1,2-bis[4-(diethylaminomethyl)phenyl]ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

0.8 ml of DIPEA is added to a mixture of 0.82 g of the compound obtained in Preparation 2.5 in 10 ml of DMF, followed by addition of 0.39 g of the compound obtained in Preparation 1.1 and 0.53 g of the BOP, and the mixture is stirred for 1 hour 30 minutes at RT, while maintaining the pH at 6 by adding DIPEA. The reaction mixture is extracted with EtOAc, the organic phase is washed with water, with 0.1N NaOH, with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on Sephadex® LH 20, eluting with a DCM/MeOH mixture (60/40; v/v). 0.32 g of the expected product is obtained.

NMR: δ (ppm): 0.85: t: 12H; 2.1 to 3.6: unres.: 16H; 4.4 to 4.9: unres.: 2H; 6.6 to 8.4: unres.: 22H.

EXAMPLE 6 N-[1-[4-(diethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-[methyl-(naphthalene-2-sulphonyl)amino]-3-phenylpropionamide

1 ml of DIPEA is added to a mixture of 0.72 g of the compound obtained in Preparation 2.7 in 6 ml of DMF, followed by addition of 0.51 g of the compound obtained in Preparation 1.2 and 0.67 g of BOP, and the mixture is stirred for 3 hours at RT while maintaining the pH at 6 by adding DIPEA. The reaction mixture is extracted with EtOAc, the organic phase is washed with water, with 0.5N NaOH, with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/MeOH/NH₄OH mixture (90/10/0.2; v/v/v). 0.27 g of the expected product is obtained.

NMR: δ (ppm): 0.95: t: 6H; 1.35 to 1.8: unres.: 4H; 2.1 to 3.6: unres.: 12H; 4.0 to 4.6: unres.: 3H; 5.55: mt: 1H; 6.8 to 8.6: unres.: 17H.

EXAMPLE 7 N-[2-[4-(Diethylaminomethyl)phenyl)-1-(N-isopropyl-N-methylcarbamoyl)ethyl]-3-(3,4-dimethylphenyl)-3-(naphthalene-2-sulphonylamino)propionamide hydrochloride

0.312 ml of triethylamine is added to a mixture of 0.288 g of the compound obtained in Preparation 1.4 and 0.4 g of the compound obtained in Preparation 2.8 in 15 ml of DCM and 3 ml of DMF, followed by addition of 0.332 g of BOP, and the mixture is stirred for 2 hours at RT. The reaction mixture is diluted with DCM and the organic phase is washed with 1N NaOH and with water and concentrated under vacuum. The residue is extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is dissolved in acetonitrile, acidified to pH 1 by adding hydrochloric ether and diluted with ether, and the precipitate formed is filtered off by suction. 0.263 g of the expected product is obtained.

NMR: δ (ppm): 0.6–1.3: unres.: 12H; 1.6–1.8: unres.: 6H; 2.3–3.2: unres.: 11H; 3.7–4.9: unres.: 5H; 6.4–8.4: unres.: 16H.

EXAMPLE 8 N-[2-[4-(Diethylaminomethyl)phenyl]-1-(N-isopropyl-N-methylcarbamoyl)ethyl]-3-(benzo[1,3]dioxol-5-yl)-3-(naphthalene-2-sulphonylamino)propionamide hydrochloride

0.996 ml of triethylamine and 1.16 g of BOP are added to a mixture of 0.95 g of the compound obtained in Preparation 1.7 and 1.27 g of the compound obtained in Preparation 2.8 in 10 ml of DCM, and the mixture is stirred for 3 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/MeOH mixture (93/7; v/v). The product obtained is dissolved in EtOAc, acidified to pH 1 by adding hydrochloric ether and concentrated under vacuum. 0.78 g of the expected product is obtained after crystallization from an EtOAc/iso ether mixture.

NMR: δ (ppm). 0.6 to 1.4: unres.: 12H; 2.2 to 3.2: unres.: 1H; 3.7 to 5.0: unres.: 5H; 5.2 to 5.8: unres.: 2H; 6.2 to 8.5: unres.: 16H; 10.4: s: 1H.

EXAMPLE 9 N-[1-[4-(Diethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(2,3-dihydrobenzo[1,4]dioxin-6-yl)-3-(naphthalene-2-sulphonylamino)propionamide hydrochloride

0.497 ml of triethylamine and 0.529 g of BOP are added to a mixture of 0.494 g of the compound obtained in Preparation 1.8 and 0.450 g of the compound obtained in Preparation 2.7 in 10 ml of DCM, and the mixture is stirred for 2 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with DCM, the organic phase is washed with water, with 1N NaOH and with water and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The product obtained is dissolved in a 2-propanol/acetonitrile mixture, acidified to pH 1 by adding hydrochloric ether and diluted with ether, and the precipitate formed is filtered off by suction. 0.280 g of the expected product is obtained.

NMR: δ (ppm): 1.2: mt: 6H; 1.4 to 1.8: unres.: 12H; 3.6 to 5.0: unres.: 8H; 6.1 to 8.4: unres.: 16H; 10.5: s: 1H.

EXAMPLE 10 N-[2-[4-(Diethylaminomethyl)phenyl]-1-(N-isopropyl-N-methylcarbamoyl)ethyl]-3-(2,3-dihydrobenzo[1,4]dioxin-6-yl)-3-(5,6,7,8-tetrahydronaphthalene-2-sulphonylamino)propionamide hydrochloride

0.312 ml of triethylamine is added to a mixture of 0.312 g of the compound obtained in Preparation 1.9 and 0.4 g of the compound obtained in Preparation 2.8 in 15 ml of DCM and 3 ml of DMF, followed by addition of 0.332 g of BOP, and the mixture is stirred for 2 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with a pH 4 buffer solution, with water and with saturated NaHCO₃ solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The product obtained is dissolved in EtOAc, acidified to pH 1 by adding hydrochloric ether and diluted with ether, and the precipitate formed is filtered off by suction. 0.24 g of the expected product is obtained.

NMR: δ (ppm): 0.6–1.0: unres.: 6H; 1.05–1.35: unres.: 6H; 1.4 to 1.8: unres.: 4H; 2.2 to 3.1: unres.: 15H; 3.9–5.0: unres.: 9H; 6.2 to 8.4: unres.: 12H.

EXAMPLE 11 N-[1-[4-(Diethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-[(2,4-dichloro-3-methylbenzenesulphonyl)phenylamino]propionamide hexafluorophosphate

This compound is prepared according to the procedure described in Example 3, starting with 0.46 g of the compound obtained in Preparation 2.7 and 0.475 g of the compound obtained in Preparation 1.10 in 10 ml of DCM and 0.511 ml of triethylamine, followed by 0.595 g of BOP. 0.35 g of the expected product is obtained after crystallization from ether; m.p.=204–208° C.

NMR: δ (ppm): 1.05: t: 6H; 1.4 to 1.8: unres.: 4H; 2.2: t: 2H; 2.4: s: 3H; 2.5 to 3.5: unres.: 10H; 3.6 to 4.6: unres.: 5H; 6.8 to 7.7: unres.: 11H; 8.3: d: 1H; 10.4: bs: 1H.

EXAMPLE 12 N-[2-[4-(Diethylaminomethyl)phenyl]-1-(pyrid-3-yl)ethyl]-3-[(2,4-dichloro-3-methylbenzenesulphonyl)phenylamino]propionamide dihydrochloride

This compound is prepared according to the procedure described in Example 8, starting with the crude compound obtained in Preparation 2.10, 0.454 g of the compound obtained in Preparation 1.10 in 20 ml of DCM, 0.326 ml of triethylamine and 0.518 g of BOP. The product obtained is chromatographed on silica gel, eluting with a DCM/MeOH/2% NH₄OH mixture (95/5/0.5; v/v/v). The product obtained is dissolved in EtOAc, acidified to pH 1 by adding hydrochloric ether and concentrated under vacuum. 0.5 g of the expected product is obtained after crystallization from an EtOAc/iso ether mixture; m.p.=155° C. (decomposition).

NMR: δ (ppm): 1.1: t: 6H; 2.2: mt: 2H; 2.4: s: 3H; 2.7 to 3.2: unres.: 6H; 3.8: t: 2H; 4.1: bd: 2H; 5.1: q: 1H; 6.8 to 9.0: unres.: 16H; 10.8: s: 1H.

EXAMPLE 13 N-[1-[4-(N-ethyl-N-methylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

A) Ethyl 3-[4-(N-ethyl-N-methylaminomethyl)phenyl]-2-[3-(naphthalene-2-sulphonylamino)-3-phenylpropionylamino]propionate

0.791 g of BOP and 0.226 ml of triethylamine are added to a mixture of 0.578 g of the compound obtained in Preparation 1.1 and 0.430 g of the compound obtained in Preparation 2.11 in 10 ml of DCM, and the mixture is stirred for 3 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/MeOH mixture (100/4; v/v). 0.5 g of the expected product is obtained.

B) 3-[4-(N-Ethyl-N-methylaminomethyl)phenyl]-2-[3-(naphthalene-2-sulphonylamino)-3-phenylpropionylamino]propionic acid.

1.7 ml of 1N KOH are added to a mixture of 0.5 g of the compound obtained in the preceding step in 10 ml of EtOH and 10 ml of dioxane, and the mixture is heated at 60° C. for 4 hours. After cooling to RT, 1.7 ml of 1N HCl are added and the mixture is concentrated under vacuum. The residue is taken up in EtOH and concentrated again under vacuum. The expected product is obtained, and is used without further purification.

C) N-[1-[4-(N-Ethyl-N-methylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

0.403 g of BOP and 0.115 ml of triethylamine are added to a mixture of the compound obtained in the preceding step and 0.07 ml of pyrrolidine in 10 ml of DMF, and the mixture is stirred for 2 hours at RT. The reaction mixture is poured into water and extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.4 g of the expected product is obtained after crystallization from iso ether.

NMR: δ (ppm): 1.1: t: 3H; 1.3 to 1.85: unres.: 4H; 2.1: s: 3H; 2.2 to 3.5: unres.: 12H; 4.2 to 5.0: unres.: 2H; 6.8 to 8.6: unres.: 18H.

EXAMPLE 14 N-[1-[4-(Diethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

A) Ethyl 3-[4-(diethylaminomethyl)phenyl]-2-[3-(naphthalene-2-sulphonylamino)-3-phenylpropionylamino]propionate

A mixture of 0.599 g of the compound obtained in Preparation 1.11, 0.368 g of the compound obtained in step B of Preparation 2.7 and 0.184 ml of triethylamine in 10 ml of DMF is stirred for 4 hours at RT. After concentrating the reaction mixture under vacuum, the residue is taken up in EtOAc, the organic phase is washed with water and with saturated NaHCO₃ solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.715 g of the expected product is obtained.

B) 3-[4-(Diethylaminomethyl)phenyl]-2-[3-(naphthalene-2-sulphonylamino)-3-phenylpropionylamino]propionic acid.

1.75 ml of 1N KOH are added to a mixture of 0.715 g of the compound obtained in the preceding step in 10 ml of EtOH and 10 ml of dioxane, and the mixture is heated overnight at 60° C. 1.75 ml of 1N HCl are added and the mixture is concentrated under vacuum. The expected product is obtained, and is used without further purification.

C) N-[1-[4-(Diethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

0.161 ml of triethylamine and 0.515 g of BOP are added to a mixture of the compound obtained in the preceding step and 0.098 ml of pyrrolidine in 10 ml of DMF, and the mixture is stirred for 2 hours at RT. The reaction mixture is poured into water and extracted with EtOAc, the organic phase is washed with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.618 g of the expected product is obtained.

NMR: δ (ppm): 0.8 to 1.0: t: 6H; 1.3 to 1.7: unres.: 4H; 2.2 to 3.5: unres.: 14H; 4.1 to 4.8: unres.: 2H; 6.7 to 8.4: unres.: 18H.

EXAMPLE 15 N-[2-[4-(Diethylaminomethyl)phenyl]-1-(N-ethyl-N-isopropylcarbamoyl)ethyl]-3-(benzo[1,3]dioxol-5-yl)-3-(naphthalene-2-sulphonylamino)propionamide hydrochloride

A) Ethyl 3-[4-(diethylaminomethyl)phenyl]-2-[3-(naphthalene-2-sulphonylamino)-3-(benzo[1,3]dioxol-5-yl)propionylamino]propionate

0.652 g of BOP and 0.205 ml of triethylamine are added to a mixture of 0.589 g of the compound obtained in Preparation 1.7 and 0.410 g of the compound obtained in step B of Preparation 2.7 in 10 ml of DMF, and the mixture is stirred for 2 hours at RT. The reaction mixture is poured into an EtOAc/saturated NaHCO₃ mixture, the organic phase is washed with water and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.839 g of the expected product is obtained.

B) 3-[4-(Diethylaminometbyl)phenyl]-2-[3-(naphthalene-2-sulphonylamino)-3-(benzo[1,3]dioxol-5-yl)propionylamino]propionic acid.

1.9 ml of 1N KOH are added to a mixture of 0.83 g of the compound obtained in the preceding step in 7 ml of MeOH, 7 ml of EtOH and 7 ml of dioxane, and the mixture is stirred for 4 hours at RT. 1.9 ml of 1N HCl are added and the mixture is concentrated under vacuum. The residue is taken up in an EtOH/MeOH mixture (50/50; v/v), concentrated under vacuum, taken up in toluene and concentrated under vacuum again. 1.204 g of the expected product are obtained.

C) N-[2-[4-(Diethylaminomethyl)phenyl]-1-(N-ethyl-N-isopropylcarbamoyl)-ethyl]-3-(benzo[1,3]dioxol-5-yl)-3-(naphthalene-2-sulphonylamino)propionamide hydrochloride

0.46 g of bromotripyrrolidinophosphonium hexafluorophosphate and 0.33 ml of DIPEA are added to a mixture of 0.6 g of the compound obtained in the preceding step and 0.126 ml of N-ethylisopropylamine in 15 ml of DCM, and the mixture is stirred for 24 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with water, with saturated NaHCO₃ solution and with saturated NaCl solution, the organic phase is extracted with a pH 4 buffer solution, the aqueous phase is basified by adding saturated NaHCO₃ solution and extracted with DCM, the organic phase is washed with saturated NaHCO₃ solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/MeOH mixture (95/5; v/v). The product obtained is dissolved in EtOAc, acidified to pH 1 by adding hydrochloric ether and diluted with ether, and the precipitate formed is filtered off by suction. 0.058 g of the expected product is obtained.

NMR: δ (ppm): 0.6–1.4: unres.: 15H; 2.2–3.3: unres.: 10H; 3.7–4.9: unres.: 5H; 5.3–5.8: unres.: 2H; 6.3–8.5: unres.: 16H; 10.5: s: 1H.

EXAMPLE 16 N-[1-[4-(Diethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-phenyl-3-(quinoline-2-sulphonylamino)propionamide dihydrochloride

A) Ethyl 3-[4-(diethylaminomethyl)phenyl]-2-[3-phenyl-3-(quinoline-2-sulphonylamino)propionylamino]propionate

0.467 g of BOP is added to a mixture of 0.376 g of the compound obtained in Preparation 1.12 and 0.421 g of the compound obtained in step B of Preparation 2.7 in 10 ml of DMF, followed by addition of 0.147 ml of triethylamine, and the mixture is stirred for 2 hours at RT. The reaction mixture is poured into an NaHCO₃ solution and extracted with EtOAc, the extracts are washed with saturated NaHCO₃ solution and extracted with 1N HCl, the acidic aqueous phase is basified by adding solid NaHCO₃ and extracted with EtOAc, the organic phase is washed with water and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.455 g of the expected product is obtained.

B) 3-[4-(Diethylaminomethyl)phenyl]-2-[3-phenyl-3-(quinoline-2-sulphonylamino)propionylamino]propionic acid

1.63 ml of 1N NaOH are added to a mixture of 0.455 g of the compound obtained in the preceding step in 20 ml of EtOH and 5 ml of dioxane, and the mixture is then stirred overnight at RT. 1.63 ml of 1N HCl are added and the mixture is concentrated under vacuum. The residue is taken up in toluene and concentrated again under vacuum. The expected product is obtained, and is used without further purification.

C) N-[1-[4-(Diethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-phenyl-3-(quinoline-2-sulphonylamino)propionamide dihydrochloride

0.103 ml of triethylamine is added to a mixture of the compound obtained in the preceding step and 0.063 ml of pyrrolidine in 10 ml of DMF, followed by addition of 0.327 g of BOP, and the mixture is stirred for 2 hours at RT. The reaction mixture is poured into an EtOAc/saturated NaHCO₃ mixture, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/MeOH mixture (95/5; v/v) and then with a DCM/MeOH/NTH₄OH mixture (90/10/0.4; v/v/v). The product obtained is dissolved in EtOAc, acidified to pH 1 by adding hydrochloric ether and diluted with ether, and the precipitate formed is filtered off by suction. 0.086 g of the expected product is obtained.

NMR: δ (ppm): 1.0 to 1.9: unres.: 10H; 2.45 to 3.55: unres.: 12H; 4.0 to 5.0: unres.: 4H; 6.8 to 8.9: unres.: 17H; 10.1: s: 1H.

EXAMPLE 17 N-[1-[4-(Ethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride

A) N-[1-[4-Formylbenzyl)-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

3 g of aluminium/nickel alloy are added to a mixture of 3 g of the compound obtained in step A of Example 1 and 40 ml of 75% formic acid, and the mixture is refluxed for 2 hours. The insoluble material is filtered off by suction while hot and washed with MeOH, and the filtrate is concentrated under vacuum. The residue is taken up in chloroform, the insoluble material is filtered off by suction and washed with an MeOH/chloroform mixture, and the filtrate is concentrated under vacuum. The residue is taken up in chloroform and filtered, the filtrate is washed with saturated NaHCO₃ solution and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 2.4 g of the expected product are obtained.

B) N-[1-[4-(Ethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride

AcOH is added, to pH 5, to a mixture of 0.5 g of the compound obtained in the preceding step, 0.057 g of sodium cyanoborohydride, 0.077 g of ethylamine hydrochloride and 0.119 ml of triethylamine in 15 ml of MeOH, and the mixture is stirred for 2 hours at RT. The mixture is concentrated under vacuum, the residue is extracted with DCM, the organic phase is washed with saturated NaHCO₃ solution, with KHSO₄/K₂SO₄ buffer solution, with saturated NaHCO₃ solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/MeOH mixture (90/10; v/v) and then a DCM/MeOH/NH₄OH mixture (90/10/0.4; v/v/v). The product obtained is dissolved in EtOAc, acidified to pH 1 by adding hydrochloric ether and diluted with ether, and the precipitate formed is filtered off by suction. 0.112 g of the expected product is obtained after crystallization from an MeOH/ether mixture.

NMR: δ (ppm): 1.0 to 1.9: unres.: 7H; 2.3 to 3.4: unres.: 10H; 4.0: s: 2H; 4.25 to 4.8: unres.: 2H; 6.6 to 8.2: unres.: 14H.

EXAMPLE 18 N-[1-[4-(Dimethylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

1 ml of AcOH and 0.129 g of dimethylamine hydrochloride are added to a solution of 0.830 g of the compound obtained in step A of Example 17 in 10 ml of DCM, followed by portionwise addition of 0.456 g of sodium triacetoxyborohydride, and the mixture is stirred for 18 hours at RT. The reaction mixture is diluted with DCM, the organic phase is washed with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a chloroform/MeOH mixture (95/5; v/v). 0.52 g of the expected product is obtained.

MH⁺=613

EXAMPLE 19 N-[1-[4-(Azetidin-1-ylmethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride

A mixture of 0.489 g of the compound obtained in step A of Example 17 and 0.086 g of azetidine hydrochloride and 116 μl of TEA in 15 ml of MeOH is stirred for 1 hour at RT. Next, 0.072 ml of AcOH is added, the mixture is stirred for 15 minutes at RT, 0.079 g of sodium cyanoborohydride is added and the mixture is stirred for 2 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with DCM, the organic phase is washed with saturated NaHCO₃ solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a DCM/MeOH mixture (95/5; v/v) and then a DCM/MeOH/NH₄OH mixture (95/5/0.5; v/v/v). The product obtained is dissolved in EtOAc, acidified to pH 1 by adding hydrochloric ether and diluted with ether, and the precipitate formed is filtered off by suction. 0.115 g of the expected product is obtained.

NMR: δ (ppm): 1.4–1.8: unres.: 4H; 2.1 to 3.25: unres.: 10H; 3.6–4.8: unres.: 8H; 6.8–8.5: unres.: 18H; 10.85: s: 1H.

EXAMPLE 20 N-[1-[4-(dibutylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-naphthalene-2-sulphonylamino)-3-phenylpropionamide

A) N-[1-[4-(Hydroxymethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamnide

0.57 g of sodium nitrite is added to a mixture of 3.5 g of the compound obtained in Example 1 in 100 ml of water and 20 ml of dioxane, and the mixture is heated at 110° C. for 2 hours. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with water and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is taken up in ether and the precipitate formed is filtered off by suction. 2.78 g of the expected product are obtained.

B) N-[1-[4-(Chloromethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide and N-[1-[4-(methylsulphonyloxymethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide

0.3 ml of triethylamine is added to a solution of 1 g of the compound obtained in the preceding step in 10 ml of DCM, followed by addition of 0.167 ml of methanesulphonyl chloride, and the mixture is stirred for 30 minutes at RT. A further 0.3 ml of triethylamine is added, followed by addition of 0.167 ml of methanesulphonyl chloride and the reaction mixture is stirred for 30 minutes and concentrated under vacuum. The residue is extracted with EtOAc, the organic phase is washed with water and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. 0.68 g of the mixture of expected products is obtained.

C) N-[1-[4-(dibutylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-naphthalene-2-sulphonylamino)-3-phenylpropionamide

0.045 g of 80% sodium hydride in oil is added to a solution of 0.245 g of dibutylamine in 5 ml of THF, and the mixture is stirred for 30 minutes at RT. 1 g of the compound obtained in the preceding step is then added and the mixture is stirred for 18 hours at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with DCM, the organic phase is washed with water and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a chloroform/MeOH mixture (95/5; v/v). 0.2 g of the expected product is obtained.

MH⁺=698

EXAMPLE 21 N-[1-[4-(Butylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride

A) N-[1-[4-(N-Benzyl-N-butylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride

0.073 g of 80% sodium hydride in oil is added to a solution of 0.397 g of N-butylbenzylamine in 5 ml of THF, and the mixture is stirred for 30 minutes at RT. 1.5 g of the compound obtained in step B of Example 20 are then added and the mixture is stirred for 18 hours at RT. The insoluble material is filtered off by suction and washed with THF, and the filtrate is concentrated under vacuum. The residue is extracted with DCM, the organic phase is washed with 0.1N HCl and with saturated NaCl solution and dried over Na₂SO₄, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica gel, eluting with a chloroform/MeOH mixture (96/4; v/v). 0.265 g of the expected product is obtained.

B) N-[1-[4-(Butylaminomethyl)benzyl]-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-(naphthalene-2-sulphonylamino)-3-phenylpropionamide hydrochloride

0.6 ml of 1N HCl is added to a solution of 0.47 g of the compound obtained in the preceding step in 5 ml of MeOH, followed by addition of 0.5 g of 10% palladium-on-charcoal, and the mixture is hydrogenated at RT under a pressure of 13 332 Pa for 18 hours. The catalyst is filtered off through Celite® and washed with an MeOH/chloroform mixture, and the filtrate is concentrated under vacuum. The residue is chromatographed on silica gel, eluting with a chloroform/MeOH mixture (95/5; v/v). 0.12 g of the expected product is obtained.

MH⁺=641

By working according to the procedures described in the preceding Examples, the compounds according to the invention collated in Table VIII below are prepared.

TABLE VIII (I)

Salt Examples R₃ R₄ R₅ mass or NMR 22(a)

NMR 23(b)

—CH₂—N(Et)₂ HClNMR 24(c)

—CH₂—N(Et)₂ NMR 25(d)

—CH₂—N(Et)₂ NMR 26(e)

—CH₂—N(Et)₂ NMR 27(f)

—CO—N(iPr)₂ —CH₂—N(Et)₂ HClNMR 28(g)

—CH₂N(n-Pr)₂ HClNMR 29(h)

—CH₂—N(iPr)₂ HClNMR 30(i)

—CH₂—N(Et)₂ HClNMR 31(j)

—CH₂N(Et)₂ HClNMR 32(k)

—CH₂NH—CH₂CH₂OH Mass 33(l)

Mass 34(m)

NMR 35(n)

NMR 36(o)

NMR

Mass or proton NMR spectra at 200 MHz in DMSO-d₆ of the compounds of the Examples of Table I.

EXAMPLE 22

δ (ppm): 1.2–1.9: unres.: 10H; 2.5–3.4: unres.: 12H; 4.2: s: 2H; 4.45: t: 1H; 4.7: t: 1H; 6.8–8.3: unres.: 16H.

EXAMPLE 23

δ (ppm): 1.2: t: 6H; 1.4–1.75: unres.: 4H; 1.8: s: 3H; 2.2–3.2: unres.: 12H; 4.0–4.8: unres.: 4H; 6.5–8.4: unres.: 17H; 10.4: s: 1H.

EXAMPLE 24

δ (ppm): 0.9: t: 6H; 1.3–1.6: unres.: 4H; 2.2–3.5: unres.: 20H; 4.2–4.7: unres.: 2H; 5.85: t: 1H; 6.15: d: 2H; 6.8–8.3: unres.: 13H.

EXAMPLE 25

δ (ppm): 1.0: t: 6H; 1.4–1.8: unres.: 4H; 2.3–3.7: unres.: 20H; 4.3–4.8: unres.: 2H; 6.4–8.4: unres.: 16H.

EXAMPLE 26

δ (ppm): 0.5–1.0: unres.: 12H; 2.2–2.9: unres.: 11H; 3.35–5.0: unres.: 9H; 6.2–8.4: unres.: 16H.

EXAMPLE 27

δ (ppm): 0.5–1.4: unres.: 18H; 2.2–3.1: unres.: 8H; 3.15–4.8: unres.: 10H; 6.2–8.3: unres.: 16H; 10.35: s: 1H.

EXAMPLE 28

δ (ppm): 0.6–0–9: mt: 6H; 1.3–1.9: mt: 8H; 2.2–3.65: mt: 12H; 4.0–4.9: unres.: 4H; 6.7–8.5: unres.: 18H; 10.5: bs: 1H.

EXAMPLE 29

δ (ppm): 1.0–1.8: unres.: 16H; 2.2–3.7: unres.: 10H; 4.0–4.8: unres.: 4H; 6.7–8.5: unres.: 18H; 9.2: bs: 1H.

EXAMPLE 30

δ (ppm): 1.3–1.8: unres.: 4H; 2.2–3.8: unres.: 8H; 3.9–5.0: unres.: 6H; 6.6–8.8: unres.: 22H; 11.35: mt: 1H.

EXAMPLE 31

δ (ppm): 1.0–1.3: mt: 6H; 1.4–1.8: unres.: 4H; 2.2–3.2: unres.: 12H; 4.0–4.7: unres.: 4H; 5.2–5.7: unres.: 2H; 6.2–8.4: unres.: 16H; 10.2: bs: 1H.

EXAMPLE 32

MH⁺=629

EXAMPLE 33

MH⁺=639

EXAMPLE 34

δ (ppm): 0.5–1.0: unres.: 6H; 1.25–1.65: unres.: 6H; 2.1–3.0: unres.: 11H; 3.2–4.9: unres.: 5H; 5.2–5.8: unres.: 2H; 6.2–8.4: unres.: 16H.

EXAMPLE 35

δ (ppm): 0.4–0.9: unres.: 6H; 1.15–2.1: unres.: 11H; 2.15–2.9: unres.: 8H; 3.2–4.8: unres.: 5H; 5.2–5.7: mt: 2H; 6.2–8.3: unres. 16H.

EXAMPLE 36

δ (ppm): 0.4–0.8: unres.: 6H; 1.05–2.65: unres.: 4H; 2.7–2.9: unres.: 11H; 3.2–4.8: unres.: 7H; 5.2–5.65: unres.: 2H; 6.2–8.3: unres.: 16H.

-   (a) This compound is prepared according to the procedure described     in Example 3, starting with the compound obtained in Preparation 1.1     and the compound obtained in Preparation 2.6. -   (b) This compound is prepared according to the procedure described     in Example 3, starting with the compound obtained in Preparation 1.3     and the compound obtained in Preparation 2.7. The crude product     obtained is dissolved in EtOAc and acidified to pH 1 by adding     hydrochloric ether, diluted with ether, and the precipitate formed     is filtered off by suction. -   (c) This compound is prepared according to the procedure described     in Example 3, starting with the compound obtained in Preparation 1.5     and the compound obtained in Preparation 2.7. -   (d) This compound is prepared according to the procedure described     in Example 3, starting with the compound obtained in Preparation 1.6     and the compound obtained in Preparation 2.7. -   (e) This compound is prepared according to the procedure described     in Example 7, starting with the compound obtained in Preparation 1.8     and the compound obtained in Preparation 2.8, without preparing the     hydrochloride. -   (f) This compound is prepared according to the procedure described     in Example 8, starting with the compound obtained in Preparation 1.8     and the compound obtained in Preparation 2.9. -   (g) This compound is prepared according to the procedure described     in Example 13, step A, starting with the compound obtained in     Preparation 1.1 and the compound obtained in Preparation 2.12,     followed by saponification with 1N KOH according to step B and     coupling with pyrrolidine according to step C. At the end of step C,     formation of the hydrochloride in EtOAc by addition of hydrochloric     ether. -   (h) This compound is prepared according to the procedure described     in Example 13, step A, starting with the compound obtained in     Preparation 1.1 and the compound obtained in Preparation 2.13,     followed by saponification with 1N KOH according to step B and     coupling with pyrrolidine according to step C. Formation of the     hydrochloride according to (g) above. -   (i) This compound is prepared according to the procedure described     in step C of Example 13, starting with the compound obtained in step     B of Example 15 and N-methylcyclopentylamine. The product obtained     is chromatographed on silica gel, eluting with a DCM/MeOH/NH₄OH     mixture (95/5/0.4; v/v/v) and the hydrochloride is then formed in     EtOAc/hydrochloric ether. -   (j) This compound is prepared according to the procedure described     in step C of Example 13, starting with the compound obtained in step     B of Example 15 and pyrrolidine. The product obtained is     chromatographed on silica gel, eluting with a DCM/MeOH/NH₄OH mixture     (95/5/0.4; v/v/v) and the hydrochloride is then formed in     EtOAc/hydrochloric ether and crystallized from MeOH/ether. -   (k) This compound is prepared according to the procedure described     in Example 17, starting with the compound obtained in step A of     Example 18 and 2-aminoethanol. -   (l) This compound is prepared according to the procedure described     in Example 18, starting with the compound obtained in step A of     Example 17 and pyrrolidine. -   (m) This compound is prepared according to the procedure described     in Example 8, starting with the compound obtained in Preparation 1.7     and the compound obtained in Preparation 2.15, without performing     chromatography or salification. -   (n) This compound is prepared according to the procedure described     in Example 8, starting with the compound obtained in Preparation 1.7     and the compound obtained in Preparation 2.16, without performing     chromatography or salification. -   (o) This compound is prepared according to the procedure described     in Example 8, starting with the compound obtained in Preparation 1.7     and the compound obtained in Preparation 2.17, without performing     chromatography or salification.

EXAMPLE 37

-   A) (R)     N-[1-(4-Cyanobenzyl)-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-[N-(benzo[1,3]dioxol-5-yl)amino]propionamide.

This compound is obtained by the action of the compound from Preparation 1.17 on the compound from Preparation 2.18.

-   B) (R)     N-[1-(4-formylbenzyl)-2-oxo-2-(pyrrolidin-1-yl)ethyl]-3-[N-(benzo[1,3]dioxol-5-yl)amino]propionamide.

550 mg of the compound from the preceding step are placed in 16 ml of a pyridine/acetic acid/water mixture (2/1/1) at 0° C., and 1.3 g of NaH₂PO₂.H₂O and 260 mg of Raney nickel are added. The reaction medium is heated for 2 hours at 55° C. and then filtered through Celite® and rinsed with an EtOH/DCM mixture (1/1), and the filtrate is concentrated. The residue is extracted with EtOAc and then washed successively with water (twice), with saturated NaHCO₃ solution, with water, with 5% KHSO₄ solution and with saturated NaCl solution. The expected product is obtained, and is used without further purification in the following step.

126

C) The product obtained in the preceding step is placed in 10 ml of dichloromethane and is treated with 160 μl of methyl-tert-butylamine and 264 mg of NaHB(OAc)₃. After stirring for 24 hours at RT, the medium is diluted with DCM and then washed successively with water (twice), with saturated NaHCO₃ solution and with saturated NaCl solution. The hydrochloride is prepared by adding Et₂O saturated with HCl gas to a solution of the compound in EtOAc/Et₂O (1/1; v/v). 0.36 g of the expected compound is obtained, which crystallizes from an EtOAc/Et₂O mixture; m.p.=166° C. α_(D) ²⁵=−7.8 (c=1; MeOH).

NMR: 1.4–2.05 ppm: unres.: 13H; 2.2–4.8 ppm: unres.: 16H; 6.15 ppm: s: 2H; 6.65–7.8 ppm: unres.: 9H; 8.5 ppm: d: 1H; 9.95 ppm: bs: 1H.

EXAMPLE 38

-   A)     (R,R)-2-((3-(N-Boc)amino-3-(benzo[1,3]dioxol-5-yl)propanoyl)amino)-3-(4-(diisopropylaminomethyl)phenyl)-N-isopropyl-N-methylpropionamide.

237 mg of the compound obtained in Preparation 1.13 and the compound obtained in Preparation 2.19 are mixed with 303 mg of BOP and 360 μl of DIPEA in 10 ml of DCM. After stirring for 3 hours at RT, the mixture is concentrated to dryness. The residue is extracted with EtOAc and then washed successively with water, with saturated NaHCO₃ solution and with saturated NaCl solution. 420 mg of the expected compound are obtained.

-   B)     (R,R)-2-((3-Amino-3-(benzo[1,3]dioxol-5-yl)propanoyl)amino)-3-(4-(diisopropylaminomethyl)phenyl)-N-isopropyl-N-methylpropionamide,     2TFA.

420 mg of the compound from the preceding step are placed in 15 ml of TFA and 20 ml of DCM. After stirring for 2 hours at RT, the mixture is concentrated to dryness. 0.504 g of the expected compound is obtained, which crystallizes from Et₂O.

-   C)     (R,R)-2-((3-Naphthalene-2-sulphonylamino-3-(benzo[1,3]dioxol-5-yl)propanoyl)amino)-3-(4-(diisopropylaminomethyl)phenyl)-N-isopropyl-N-methylpropionamide.

500 mg of the compound from the preceding step are mixed with 153 mg of 2-naphthalenesulphonyl chloride and 354 μl of DIPEA in 5 ml of DCM, and the mixture is stirred for 2 hours at RT. The reaction mixture is concentrated to dryness and then washed with water, followed by saturated NaHCO₃ solution. The hydrochloride is prepared by addition of Et₂O saturated with HCl to a solution of the compound of EtOAc. 0.280 g of the expected compound is obtained.

NMR: 0.6–1.6 ppm: unres.: 18H; 2.2–3.1 ppm: unres.: 7H; 3.4–5.8 ppm: unres.: 9H; 6.3–8.6 ppm: unres.: 16H; 9.1 ppm: bs: 1H.

α_(D) ²⁵=+55.2° (c=1; MeOH).

By working as in the above examples, the compounds according to the invention of formula (I) described in Table IX are prepared.

TABLE IX (I)

Example R₁ R₂ R₃ R₄ R₅ 39c2HCl

H

40HCl

H

41HCl

H

42HCl

H

432HCl

H

44HCl

H

45

H

46

H

47HCl

H

48

H

49

H

50HCl

H

51HCl

H

52HCl

H

53

H

54HCl

H

55HCl

H

56HCl

H

57

H

58

H

59

H

602HCl

H

61HCl

H

62HCl

H

63

H

64

H

65

H

66

H

67

H

68HCl

H

69HCl

H

70

H

712HCl

H

72HCl

H

73

H

74

H

75HCl

H

76

H

77HCl

H

782HCl

H

792HCl

H

802HCl

H

81HCl

H

822HCl

H

83HCl

H

842HCl

H

85

H

86HCl

H

87HCl

H

88HCl

H

89

H

902HCl

H

91HCl

H

92

H

93

H

94

H

95

H

96HCl

H

97HCl

H

98HCl

H

99HCl

H

100 HCl

H

101 HCl

H

102 HClR isomer

H

103 HCl

H

104 HClR, Risomer

H

105 HClR isomer

H

106

H

107

H

108HClR, RIsomer

H

109HClR, RIsomer

H

EXAMPLE 39

NMR: 1.3–1.8 ppm: unres.: 4H; 2.2–3.6 ppm: unres.: 21H; 4.2–4.8 ppm: unres.: 2H; 6.8–8.4 ppm: unres.: 18H; 10.2 ppm: bs: 1H.

EXAMPLE 41

NMR: 1.1–1.8 ppm: unres.: 10H; 2.4–3.4 ppm: unres.: 12H; 4.2 ppm: bs: 2H; 4.4–4.8 ppm: unres.: 2H; 6.5–8.5 ppm: unres.: 18H; 10.3 ppm: bs: 1H.

EXAMPLE 42

NMR: 1.2–2 ppm: unres.: 10H; 2.4–3.3 ppm: unres.: 12H; 4.2–4.9 ppm: unres.: 4H; 6.9–9.1 ppm: unres.: 14H; 10.2 ppm: bs: 1H.

EXAMPLE 43

NMR: 1–1.8 ppm: unres.: 10H; 2.2–3.5 ppm: unres.: 18H; 4–5 ppm: unres.: 4H; 6.6–8.7 ppm: unres.: 17H; 10.7 ppm: bs: 1H.

EXAMPLE 44

NMR; 1.2 ppm: mt: 6H; 1.4–1.8 ppm: unres.: 4H; 2.2–3.3 ppm: unres.: 15H; 4.1–4.9 ppm: wires.: 4H; 6.8–8.1 ppm: wires.: 12H; 8.35 ppm: d: 1H; 8.9 ppm: d: 1H; 10.25 ppm: bs: 1H.

EXAMPLE 47

NMR: 0.5–1.3 ppm: unres.: 12H; 2.1–3.1 ppm: unres.: 11H; 3.6–5 ppm: unres.: 5H; 6.2–8.5 ppm: unres.: 22H; 10.1 ppm: bs: 1H.

EXAMPLE 48

NMR: 1 ppm: s: 9H; 1.2–1.7 ppm: unres.: 4H; 1.9 ppm: s: 3H; 2.2–3.5 ppm: unres.: 10H; 4.1–4.75 ppm: unres.: 2H; 6.7–8.4 ppm: unres.: 18H.

EXAMPLE 49

NMR: 0.95 ppm: t: 6H; 2.1–3.6 ppm: unres.: 10H; 4.4–5.1 ppm: unres.: 2H; 6.6–8.6 ppm: unres.: 23H.

EXAMPLE 50

NMR: 1.3–1 ppm: unres.: 6H; 1.7–3.5 ppm: unres.: 16H; 4–5 ppm: unres.: 5H; 5.2–5.7 ppm: unres.: 2H; 6.2–8.4 ppm: unres.: 21H; 10.7 ppm: bs: 1H.

EXAMPLE 51

NMR: 0.4–1.3 ppm: unres.: 12H; 2.1–3.1 ppm: unres.: 11H; 3.6–4.8 ppm: unres.: 5H; 6.6–8.5 ppm: unres.: 17H; 10 ppm: bs: 1H.

EXAMPLE 52

NMR: 1.15 ppm: t: 6H; 2.2 ppm: t: 2H; 2.5 ppm: s: 3H; 2.7–3.1 ppm: unres.: 6H; 3.8 ppm: t: 2H; 4.15 ppm: d: 2H; 4.9 ppm: q: 1H; 6.9–7.7 ppm: unres.: 16H; 8.5 ppm: d: 1H; 10.5 ppm: bs: 1H.

EXAMPLE 53

NMR: 0.4–1.5 ppm: unres.: 20H; 2–2.85 ppm: unres.: 11H; 3.3–4.8 ppm: unres.: 5H; 5.2–5.7 ppm: 2s: 2H; 6.2–8.3 ppm: unres.: 16H.

EXAMPLE 54

NMR: 1.4 ppm: s: 9H; 2–2.6 ppm: unres.: 8H; 2.9 ppm: d: 2H; 3.6–4.6 ppm: unres.: 4H; 4.9 ppm: q: 1H; 6.9–7.7 ppm: unres.: 16H; 8.5 ppm: d: 1H; 9.9 ppm: bs: 1H.

EXAMPLE 55

NMR: 1.15 ppm: t: 6H; 2.4 ppm: s: 3H; 2.8–3.1 ppm: unres.: 6H; 3.75 ppm: t: 2H; 4.15 ppm: d: 2H; 4.9 ppm: q: 1H; 5.95 ppm: s: 2H; 6.4–7.7 ppm: unres.: 14H; 8.4 ppm: d: 1H; 10.1 ppm: bs: 1H.

EXAMPLE 56

NMR: 0.7–1.3 ppm: unres.: 12H; 2.2 ppm: t: 2H; 2.3–3.1 ppm: unres.: 12H; 3.6–5 ppm: unres.: 6H; 6 ppm: s: 2H; 6.4–7.7 ppm: unres.: 9H; 8.3 ppm: dd: 1H; 10.2 ppm: bs: 1H.

EXAMPLE 57

NMR: 1.05 ppm: ds: 9H; 1.85 ppm: ds: 3H; 2.1–3.4 ppm: unres.: 6H; 4.3–4.9 ppm: unres.: 2H; 5.2–5.8 ppm: 2ds: 2H; 6.1–8.4 ppm: unres.: 21H.

EXAMPLE 60

NMR: 1.25 ppm: t: 6H; 2.3 ppm: mt: 2H; 2.5 ppm: s: 3H; 3 ppm: mt: 6H; 3.85 ppm: t: 2H; 4.25 ppm: d: 2H; 5.25 ppm: q: 1H; 6.1 ppm: s: 2H; 6.4–9.2 ppm: unres.: 14H; 10.7 ppm: bs: 1H.

EXAMPLE 61

NMR: 1.2 ppm: t: 6H; 2.3 ppm: mt: 2H; 2.5 ppm: s: 3H; 2.7–3.3 ppm: unres.: 6H; 3.9 ppm: t: 2H; 4.2 ppm: d: 2H; 5.1 ppm: q: 1H; 6.1–7.8 ppm: unres.: 14H; 8.45 ppm: d: 1H; 10.6 ppm: bs: 1H.

EXAMPLE 62

NMR: 0.5–1.4 ppm: unres.: 12H; 2–5 ppm: unres.: 16H; 5.95–8.5 ppm: unres.: 16H.

EXAMPLE 64

NMR: 0.6–1.3 ppm: unres.: 15H; 2.2–3.25 ppm: unres.: 9H; 3.4–5 ppm: unres.: 8H; 5.3–5.8 ppm: unres.: 2H; 6.3–8.5 ppm: unres.: 16H.

EXAMPLE 65

NMR: 0.85 ppm: td: 6H; 2.1–2.9 ppm: unres.: 8H; 3.2–4.7 ppm: unres.: 6H; 5.2–5.8 ppm: unres.: 3H; 6.1–8.3 ppm: unres.: 19H.

EXAMPLE 68

NMR: 0.6–1.3 ppm: unres.: 12H; 2–3.1 ppm: unres.: 17H; 3.6–5 ppm: unres.: 6H; 6.7–7.7 ppm: unres.: 10H; 8.3 ppm: dd: 1H; 9.9 ppm: bs: 1H.

EXAMPLE 69

NMR: 0.65–1.3 ppm: unres.: 12H; 2.15 ppm: t: 2H; 2.25 ppm: s: 3H; 2.3–3.1 ppm: unres.: 9H; 3.7–5 ppm: unres.: 6H; 7–7.7 ppm: unres.: 11H; 8.4 ppm: dd: 1H; 9.9 ppm: bs: 1H.

EXAMPLE 71

NMR: 1.2 ppm: t: 6H; 2.1–2.6 ppm: unres.: 5H; 2.8–3.5 ppm: unres.: 6H; 3.9 ppm: t: 2H; 4.2 ppm: bd: 2H; 5.2 ppm: q: 1H; 7–7.8 ppm: unres.: 13H; 8.9 ppm: d: 1H; 10.4 ppm: bs: 1H; 14.4 ppm: bs: 2H.

EXAMPLE 72

NMR: 1–1.9 ppm: unres.: 10H; 2.2 ppm: t: 2H; 2.5 ppm: s: 3H; 2.6–3.5 ppm: unres.: 10H; 3.75 ppm: t: 2H; 4.15 ppm: d: 2H; 4.5 ppm: q: 1H; 6 ppm: s: 2H; 6.3–7.7 ppm: unres.: 9H; 8.3 ppm: d: 1H; 10.2 ppm: s: 1H.

EXAMPLE 73

NMR: 0.9 ppm: mt: 6H; 1.3 ppm: mt: 2H; 1.9–2.2 ppm: unres.: 5H; 2.25–3.6 ppm: unres.: 12H; 4.2 ppm: mt: 1H; 4.55 ppm: mt: 1H; 5.2–5.7 ppm: unres.: 2H; 6.2–8.4 ppm: unres.: 17H.

EXAMPLE 74

NMR: 0.9 ppm: mt: 6H; 1.3–3.5 ppm: unres.: 19H; 4.3–4.8 ppm: unres.: 2H; 5.2–5.7 ppm: unres.: 2H; 6.2–8.4 ppm: unres.: 16H.

EXAMPLE 77

NMR: 0.5–1.4 ppm: unres.: 18H; 2.1–3 ppm: unres.: 8H; 3.3–4.8 ppm: unres.: 7H; 5.2–5.65 ppm: unres.: 2H; 6.2–8.4 ppm: unres.: 16H; 9.15 ppm: s: 1H.

EXAMPLE 78

NMR: 1.4 ppm: s: 9H; 2.2–2.75 ppm: unres.: 5H; 2.9 ppm: t: 2H; 3.8 ppm: mt: 1H; 4.5 ppm: mt: 2H; 5 ppm: mt: 1H; 5.1–5.7 ppm: 2ds: 2H; 6.2–9.1 ppm: unres.: 20H; 9.6 ppm: s: 1H.

EXAMPLE 79

NMR: 0.7–1.3 ppm: unres.: 12H; 2.1–3.1 ppm: unres.: 11H; 3.7–5 ppm: unres.: 6H; 7.1–8.2 ppm: unres.: 16H; 10.85 ppm: s: 1H.

EXAMPLE 80

NMR: 0.7–1.4 ppm: unres.: 12H; 2.2–3.2 ppm: unres.: 14H; 3.7–5 ppm: unres.: 6H; 7–8.8 ppm: unres.: 11H; 10.8 ppm: s: 1H.

EXAMPLE 82

NMR: 0.7–1.5 ppm: unres.: 12H; 2.4–3.3 ppm: unres.: 14H; 4–5.1 ppm: unres.: 6H; 7.2–9 ppm: unres.: 11H; 10.8 ppm: s: 1H.

EXAMPLE 83

NMR: 1.4 ppm: s: 9H; 2–3 ppm: unres.: 10H; 3.6–4.6 ppm: unres.: 4H; 4.9 ppm: mt: 1H; 5.95 ppm: s: 2H; 6.3–7.7 ppm: unres.: 14H; 8.4 ppm: d: 1H; 9.65 ppm: bs: 1H.

EXAMPLE 84

NMR: 0.6–1.4 ppm: unres.: 12H; 2.4–3.2 ppm: unres.: 11H; 3.8–5.1 ppm: unres.: 6H; 7–8.9 ppm: unres.: 15H; 10.9 ppm: bs: 2H.

EXAMPLE 85

NMR: 1 ppm: t: 6H; 2.3–3.7 ppm: unres.: 10H; 4.7 ppm: mt: 1H; 5 ppm: mt: 1H; 5.1–5.8 ppm: 2ds: 2H; 6.2–8.8 ppm: unres.: 20H; 12.15 ppm: sd: 1H.

EXAMPLE 86

NMR: 1.2–2.55 ppm: unres.: 16H; 2.85 ppm: mt: 2H; 3.1–4.4 ppm: unres.: 5H; 4.9 ppm: mt: 1H; 6.8–7.6 ppm: unres.: 16H; 8.4 ppm: d: 1H; 10.6 ppm: bs: 1H.

EXAMPLE 87

NMR: 0.6–1.3 ppm: unres.: 12H; 2.2 ppm: t: 2H; 2.35–3.1 ppm: unres.: 12H; 3.7–5 ppm: unres.: 6H; 6.9–7.8 ppm: unres.: 9H; 8.3 ppm: dd: 1H; 10.1 ppm: bs: 1H.

EXAMPLE 88

NMR: 0.7–1.3 ppm: unres.: 12H; 2.3 ppm: t: 2H; 2.4–3.1 ppm: unres.: 12H; 3.5–5 ppm: unres.: 6H; 7–7.7 ppm: unres.: 10H; 8.4 ppm: dd: 1H; 10 ppm: bs: 1H.

EXAMPLE 89

NMR: 1.05 ppm: s: 9H; 1.85 ppm: s: 3H; 2.2 ppm: t: 2H; 2.6 ppm: s: 3H; 2.8 ppm: mt: 2H; 3.4 ppm: s: 2H; 3.7 ppm: s: 2H; 4.9 ppm: mt: 1H; 5.95 ppm: s: 2H; 6.3–8.6 ppm: unres.: 14H.

EXAMPLE 90

NMR: 1.5 ppm: s: 9H; 2.2–2.6 ppm: unres.: 8H; 3 ppm: unres.: 2H; 3.8–4.6 ppm: 2 unres.: 4H; 5.2 ppm: unres.: 1H; 7–9.2 ppm: unres.: 17H; 10 ppm: bs: 1H.

EXAMPLE 91

NMR: 1.5 ppm: s: 9H; 2.3 ppm: t: 2H; 2.4–2.6 ppm: unres.: 6H; 3 ppm: bd: 2H; 3.8–4.1 ppm: unres.: 3H; 4.4–5 ppm: unres.: 2H; 6 ppm: s: 2H; 6.6–7.8 ppm: unres.: 14H; 8.5 ppm: d: 1H; 10.4 ppm: bs: 1H.

EXAMPLE 94

NMR: 0.9 ppm: t: 6H; 2.1–3.7 ppm: unres.: 14H; 4.50 ppm: mt: 1H; 5–5.7 ppm: unres.: 3H; 6–8.6 ppm: unres.: 20H.

EXAMPLE 95

NMR: 0.95 ppm: t: 6H; 2.1–2.7 ppm: unres.: 9H; 3–4 ppm: unres.: 9H; 5.4 ppm: q: 1H; 6.05 ppm: s: 2H; 6.4–7.8 ppm: unres.: 13H; 8.7 ppm: d: 1H.

EXAMPLE 99

NMR: 1.5 ppm: s: 9H; 1.9–2.55 ppm: unres.: 10H; 2.6–3.1 ppm: unres.: 6H: 3.75–4.8 ppm: unres.: 4H; 5.05 ppm: mt: 1H; 6.7–7.8 ppm: unres.: 14H; 8.55 ppm: d: 1H; 9.4 ppm: bs: 1H.

EXAMPLE 101

NMR: 0.5–1.4 ppm: unres.: 18H; 2.1–3 ppm: unres.: 7H; 3.3–4.9 ppm: unres.: 11H; 6.1–8.4 ppm: unres.: 16H; 9.1 ppm: bs: 1H.

EXAMPLE 102

NMR: 0.8–1.2 ppm: unres.: 6H; 1.5 ppm: s: 9H; 2.2–3.1 ppm: unres.: 13H; 3.7–5.1 ppm: unres.: 6H: 6.1 ppm: s: 1H; 6.5–7.8 ppm: unres.: 9H; 8.3–8.6 ppm: unres.: 1H; 9.5 ppm: bs: 1H.

EXAMPLE 103

NMR: 0.8–1.5 ppm: unres.: 12H; 2.35 ppm: t: 2H; 2.5 ppm: s: 6H; 2.6–3.1 ppm: unres.: 5H; 3.45 ppm: mt: 1H; 3.8–5.1 ppm: unres.: 6H; 6.15 ppm: s: 2H; 6.5–7.8 ppm: unres.: 9H; 8.3–8.6 ppm: unres.: 1H; 10.5 ppm: bs: 1H.

EXAMPLE 104

NMR: 0.7 ppm: mt: 6H; 1.4 ppm: s: 9H; 2.2–3 ppm: unres.: 10H; 3.8 ppm: mt: 1H; 4.3–4.9 ppm: unres.: 4H; 5.2–5.7 ppm: 2s: 2H; 6.2–8.4 ppm: unres.: 16H; 9.5 ppm: s: 1H.

EXAMPLE 105

NMR: 1.4–2.4 ppm: unres.: 14H; 2.5 ppm: s: 6H; 2.65 to 5 ppm: unres.: 12H; 6.1 ppm: s: 2H; 6.5–7.8 ppm: unres.: 9H; 8.45 ppm: d: 1H; 10.8 ppm: bs: 1H.

EXAMPLE 106

MH⁺: 765

EXAMPLE 107

MH⁺: 765

EXAMPLE 108

NMR: 0.6 to 1.4 ppm: unres.: 15H; 2.1 to 3.5 ppm: unres.: 11H; 3.6 to 4.9 ppm: unres.: 5H; 5.2 to 5.7 ppm: 2s: 2H; 6.2 to 6.5 ppm: unres.: 3H; 7 to 8.4 ppm: unres.: 13H; 9.8 ppm: bs: 1H.

EXAMPLE 109

NMR: 0.5 to 1.5 ppm: unres.: 18H; 2.1 to 3 ppm: unres.: 10H; 3.4 to 4.9 ppm: unres.: 7H; 5.75 to 5.80 ppm: 2s: 2H; 6.2 to 6.65 ppm: unres.: 3H; 7 to 7.6 ppm: unres.: 7H; 8.1 to 8.4 ppm: unres.: 2H; 8.8 ppm: bs: 1H.

EXAMPLE 110

A mixture containing 250 mg of the compound from Preparation 3.8, 74 mg of 2-naphthalenesulphonyl chloride and 171 μl of DIPEA in 10 ml of DCM is stirred overnight at RT. The medium is concentrated to dryness and is then taken up in EtOAc and washed with water and with saturated NaHCO₃ solution. The resulting solution is extracted with a pH 2 buffer and then basified to pH 8 with saturated NaHCO₃ solution. This mixture is extracted with DCM and then washed with saturated NaCl solution. The resulting mixture is taken up in an EtOAc/Et₂O mixture and the hydrochloride is prepared by addition of hydrochloric ether. 140 mg of the expected compound are obtained.

NMR: 0.7 to 2.1 ppm: unres.: 18H; 2.3 to 3.2 ppm: unres.: 9H; 3.3 ppm: mt: 1H; 3.8 to 5 ppm: unres.: 4H; 5.4 to 5.8 ppm: 2s: 2H; 6.4 to 6.8 ppm: unres.: 3H; 7.1 to 8.2 ppm: unres.: 11H; 8.2 to 8.5 ppm: mt: 2H; 9.4 to 10.3 ppm: 2 bs: 1H.

α_(D) ²⁵=+50° (c=1; MeOH)

MH⁺: 727

EXAMPLE 111

This compound is prepared by working according to the example described above, starting with the compound from Preparation 3.8 and 6-methoxynaphthalene-2-sulphonyl chloride obtained according to J. Med. Chem., 1999, 42, 3557–3571.

NMR: 0.6 to 2 ppm: unres.: 18H; 2.2 to 3.6 ppm: unres.: 10H; 3.8 to 5 ppm: unres.: 7H; 5.4 to 5.8 ppm: 2s: 2H; 6.3 to 6.6 ppm: unres.: 3H; 7.1 to 8.1 ppm: unres.: 10H; 8.1 to 8.5 ppm: unres.: 2H; 9.4 to 10.2 ppm: 2bs: 1H.

α_(D) ²⁵=+32° (c=1; MeOH)

MH⁺: 757

EXAMPLE 111a

152 mg of the compound of Example 111 are placed in a mixture of 50 ml of DCM and 20 ml of saturated NaHCO₃ solution. The organic phase obtained is dried and then concentrated to give the compound in the form of a base. The medium is taken up in 5 ml of DCM and treated with 75 mg of 60% meta-chloroperbenzoic acid for 1 hour at RT. The reaction mixture is extracted with DCM and the organic phase is then washed with saturated NaCl solution. 0.14 g of the expected compound is obtained, which crystallizes from methyl tert-butyl ether.

MH+: 773

NMR: 0.6 to 1.8 ppm: unres.: 18H; 2.2 to 3.4 ppm: unres.: 10H; 3.8 ppm: s: 3H; 4.3 to 4.9 ppm: unres.: 4H ; 5.4 to 5.6 ppm: d: 2H; 6.3 ppm: mt: 3H; 7.1 to 7.8 ppm: unres.: 10H.

EXAMPLE 112

225 mg of the product obtained in Preparation 3.9 are placed in 3 ml of TFA and 10 ml of DCM, and the mixture is stirred for 30 minutes at RT. The medium is concentrated and then triturated in iPr₂O. The oil formed is decanted off. The oil formed is taken up in 5 ml of DCM and treated with 100 μl of TEA and then 82 mg of 2-naphthalenesulphonyl chloride, while maintaining the pH at 7 by adding TEA. The medium is stirred overnight at RT and is then concentrated. It is extracted with EtOAc and washed with water (3 times) and with saturated NaCl solution. The hydrochloride is prepared, which crystallizes from an EtOAc/Et₂O mixture.

NMR: 0.5 to 2 ppm: unres.: 16H; 2.2 to 3 ppm: unres.: 11H; 3.2 to 4.8 ppm: unres.: 5H; 5.3 and 5.6 ppm: 2s: 2H; 6.3 to 6.6 ppm: unres.: 3H; 7 to 7.3 ppm: unres.: 2H; 7.4 to 7.8 ppm: unres.: 6H; 7.9 to 8.1 ppm: unres.: 5H; 8.3 ppm: mt: 1H.

α_(D) ²⁵=+42.1° (c=1; MeOH)

MH⁺: 727

EXAMPLE 113

This compound is prepared according to the examples described above, starting with the compound from Preparation 3.8 and the compound from Preparation 1.33, step A.

MH⁺: 777

EXAMPLE 114

This compound is prepared according to the examples described above, starting with the compound from Preparation 3.10 and the sulphonyl chloride described in Preparation 1.33, step A.

MH⁺: 785

Other compounds of formula (I) according to the invention were prepared by using the methods described above and identified by their mass spectrum and their NMR spectrum. They are described in the following 2 Tables:

TABLE X (I)

Examples R₁ R₃ R₄

Salt 115

— 116(R, R)

HCl 117

HCl 118

HCl 119(R, R)

HCl 120

HCl 121

HCl 122(R, R)

HCl 123(R, R)

HCl 124(R, R)

HCl 125(R, R)

HCl 126

— 127

HCl 128

— 129—

HCl 130—

HCl 131—

HCl 132—

HCl 133

HCl 134(R, R)

HCl 135(R, R)

HCl 136—

HCl 137—

HCl 138—

HCl 139—

HCl 140—

HCl 141(R, R)

HCl 142(R, R)

HCl 143—

HCl 144(R, R)

HCl 145—

HCl 146—

HCl 147—

HCl 148(R, R)

HCl 149

— 150

HCl 151

HCl 152

HCl 153

HCl 154

HCl 155

HCl 156

157

HCl 158

HCl 159

HCl 160

HCl 161(R, R)

HCl 162(R, R)

HCl 163(R, R)

HCl 164(R, R)

HCl 165(R, R)a)

HCl 166(R, R)

HCl 167

HCl 168

HCl 169(R, R)

HCl 170(R, R)

HCl 171(R, R)a)

HCl 172(R, R)

HCl 173(R, R)

HCl 174(R, R)

HCl 175

HCl 176(R, R)

HCl 177—

HCl 178(R, R)

HCl 179R, (R, S)

HCl 180

HCl 181(R, R)

HCl 182

HCl 183

HCl 184(R, R)

HCl 185(R, R)

HCl 186(R, R)

HCl 187(R, R)

HCl 188—

HCl 189(R, R)

HCl 190—

HCl 191(R, (R, S))

HCl 192(R, R)

HCl 193

HCl 194(R, R)

HCl 195

HCl 196(R, R)

HCl 197—

HPF₆ 198(R, R)

HCl 199

HCl 200(R, R)

HCl 201—

HCl 202(R, R)

HCl 203

HCl 204(R, R)

HCl 205(R, R)

HCl 206—

HCl 207(R, R)

HCl 208

HCl 209(R, R)

HCl 210(R, R)

— 211

HCl 212—

HCl 213—

HCl 214(R, R)

HCl 215(R, R)

HCl 216(R, R)

HCl 217(R, R)

HCl 218(R, R)

HCl 219

HCl 220—

HCl 221—

HCl 222(R, R)

HCl 223(R, R)

HCl 224(R, R)

HCl 225(R, R)

HCl 226(R, R)

HCl 227(R, R)

HCl 228

HCl 229(R, R)

HCl 230(R, R)

HCl 231(R, R)

HCl 232(R, R)

HCl 233(R, R)

HCl 234—

HCl 235—

HCl 236(R, R)

HCl 237((R, S), R)

HCl 238((R, S), R)

HCl 239(R, R)

HCl 240(R, R)

HCl 241(R, R)

HCl 242

HCl 243

HCl 244

HCl 245(R, R)

HCl 246(R, R)

HCl 247(R, R)

HCl 248(R, R)

HCl 249((R), R, S))

HCl 250(R, R)

HCl 251(R, R)

HCl 252(R, R)

HCl 253(R, R)

HCl 254(R, R)

HCl 255(R, R)

HCl 256(R, R)

HCl 257

HCl 258((R, S), R)

HCl 259(R, R)

HCl 260(R, R)

HCl 261(R, R)

HCl 262((R, S), R)

HCl 263(R, R)

HCl 264

HCl 265

HCl 266(R, R)

HCl 267(R, R)

HCl 268(R, R)

HCl 269(R, R)

HCl 270(R, R)

HCl 271(R, R)

HCl 272((R, S), R)

HCl 273(R, R)

HCl 274(R, R)

HCl 275(R, R)

HCl 276(R, R)

HCl 277

HCl 278(R, R)

HCl 279(R, R)

HCl 280(R, R)

HCl 281(R, R)

HCl 282((R, S), R)

HCl 283((R, S), R)

HCl 284(R, R)

HCl 285(R, R)

HCl 286

HCl 287(R, R)

HCl 288(R, R)

HCl 289((R, S), R)

HCl 290(R, R)

HCl 291((R, S), R)

HCl 292(R, R)

HCl 293((R, S), R)

HCl 294(R, R)

HCl 295((R, S), R)

HCl 296(R, R)

HCl 297(R, R)

HCl 298((R, S), R)

HCl 299(R, R)

HCl 300(R, R)

HCl 301(R, R)

HCl 302(R, R)

HCl 303

HCl 304(S, R)

(CF₃CO₂H) 305242142A(R, R)

(CF₃CO₂H) 306(R, R)

HCl 307((R, S), R)

HCl 308(S, R)

(CF₃CO₂H) 309(R, R)

(CF₃CO₂H) 310(R, R)

HCl 311((R, S), R)

HCl 312(R, R)

HCl 313(S, S)

HCl 314(R, R)

HCl

-   a) For these compounds, the intermediate sulphonyl chloride (VI) is     obtained according to Preparation 1.32.

TABLE XI (I)

Examples R₁ R₂ R₄ R₅ Salt 315(R)

HCl 316(R)

HCl 317

HCl 318

HCl

Moreover, several compounds according to the invention were prepared by a “parallel synthesis” method by reacting various sulphonyl halides of formula R₁SO₂Hal with a compound of formula (V) in which Y represents CONR₈R₉ and Z represents CH₂NR₁₁R₁₂.

EXAMPLES 319 TO 335

-   A) A solution of 0.98 g of the compound from Preparation 3.2 is     prepared in a mixture of 40 ml of CH₃CN and 10 ml of DCM. -   B) Tubes are prepared, each containing:     -   1.014 ml of the solution prepared in A, i.e. 40 μmol;     -   1.2 equivalents of sulphonyl chloride of formula R₁SO₂Cl, i.e.         48 μmol;     -   1.5 equivalents of morpholinomethylpolystyrene resin at 3.64         mmol/g, i.e. 16.5 mg of resin. -   C) The tubes are stirred for 24 hours at RT and are then each     treated with 0.6 equivalent of tris(2-aminomethyl)amine resin, i.e.     6 mg.

Each tube is filtered and concentrated, and the medium is then taken up in DMSO to obtain a solution containing 1 μmol per liter of the expected compound. The nature of the compound formed and its purity are monitored by measuring the HPLC retention time (Rt in minutes) and the mass spectrum.

The solutions of the compounds according to the invention obtained are used without further modification to measure the affinity of the said compounds for the bradykinin B₁ receptors.

In the examples below, the sulphonyl chlorides R₁SO₂Cl used are commercially available.

TABLE XII (I)

Examples R₁ mass Rt (minutes) 319

738 4.19 320

704 4.02 321

704 4.13 322

738 4.2 323

738 4.25 324

738 4.19 325

686 3.97 326

696 3.56 327

696 3.7 328

678 3.72 329

688 3.41 330

710 4.17 331

740 4.31 332

720 4.2 333

708 4.26 334

772 4.33 335

709 3.82

EXAMPLES 336 TO 338

-   A) A solution of 1.924 g of the compound from Preparation 3.1 is     prepared in 100 ml of CH₃CN. -   B) Tubes are prepared, each containing:     -   941 μl of the solution prepared in A, i.e. 40 μmol;     -   1.2 equivalents of sulphonyl chloride of formula R₁SO₂Cl, i.e.         48 μmol;     -   1.5 equivalents of morpholinomethylpolystyrene resin at 3.64         mmol/g, i.e. 16.5 mg of resin;     -   0.2 equivalent of DMAP/polystyrene resin, used as activator.

C) The tubes are stirred for 24 hours at RT and are then each treated with 0.6 equivalent of tris(2-aminoethyl)amine resin, i.e. 6 mg. Each tube is filtered and concentrated and then taken up in DMSO to obtain a solution containing 1 μmol per liter of the expected compound. The nature of the compound formed and its purity are monitored by measuring the HPLC retention time (Rt minutes) and the mass spectrum.

The solutions of the compounds according to the invention obtained are used in unmodified form to measure the affinity of the said compounds for the bradykinin B₁ receptors.

TABLE XIII (I)

Examples R₁ mass Rt (minutes) 336

660 4.49 337

694 4.9 338

696 5.1

EXAMPLES 339 TO 353 Preparation (R,R)-2-(((3-amino-3-benzo[1,3]dioxol-5-yl)propanoyl)amino)-3-(4-(diisopropylaminomethyl)phenyl)-N-isopropyl-N-methylpropionamide

A) 8.6 g of the trifluoroacetate obtained in Example 38, step B are dissolved in DCM and washed with a saturated NaHCO₃ solution and then saturated NaCl. After drying and concentration, 5.43 g of the expected compound are obtained in the form of a dry foam.

B) A solution of 524.7 mg of the compound from Preparation A is prepared in 25 ml of CH₃CN.

C) Tubes are prepared, each containing:

-   -   1 ml of the solution prepared in B, i.e. 40 μmol;     -   1.2 equivalents of sulphonyl chloride of formula R₁SO₂Cl, i.e.         48 μmol;     -   1.5 equivalents of morpholinomethylpolystyrene resin at 3.64         μmol/g, i.e. 16.5 mg of resin:

D) The tubes are stirred overnight at RT and are then each treated with 0.6 equivalent of tris(2-aminomethyl)amine resin, i.e. 6 mg. Each tube is filtered and concentrated and then taken up in DMSO to obtain a solution containing 1 μmol per liter of the expected compound. The nature of the compound and its purity are monitored by measuring the HPLC retention time (Rt minutes) and the mass spectrum.

The solutions of the compounds according to the invention obtained are used without further modification to measure the affinity of the said compounds for the bradykinin B₁ receptors.

TABLE XIV (I)

Examples R₁ Mass Rt minutes 339

748 5.22 340

704 4.79 341

754 5.08 342

740 4.78 343

746 5.17 344

706 5.06 345

726 5.22 346

732 4.94 347

700 4.73 348

716 4.9 349

698 4.77 350

698 4.8 351

694 4.47 352

732 4.96 353

678 4.64

EXAMPLES 354 TO 363 Preparation (R,R)-2-(((3-Amino-3-benzo[1,3]dioxol-5-yl)propanoyl)amino)-3-(4-(N-methyl-N-cyclopentylaminomethyl)phenyl)-N-isopropyl-N,N-disopropylpropionamide

This compound is prepared from the compounds obtained in Preparations 2.47 and 1.13: these 2 compounds are reacted after the necessary deprotection to give, after deprotection, the expected compound in the form of a bis(trifluoroacetate).

A) 210 mg of this bis(trifluoroacetate) are dissolved in DCM and washed with saturated NaHCO₃ solution and then with saturated NaCl. After drying and concentration, 141 mg of the expected compound are obtained in the form of an oil.

B) A solution of 141 mg of the compound from step A in 20 ml of CH₃CN is prepared.

C) Tubes are prepared, each containing:

-   -   1.48 ml of the solution prepared, i.e. 20 μmol;     -   1.2 equivalents of sulphonyl chloride of formula R₁SO₂Cl, i.e.         24 μmol;     -   1.5 equivalents of morpholinomethylpolystyrene resin at 3.64         μmol/g, i.e. 8.24 mg of resin.

D) The tubes are stirred overnight at RT and are then each treated with 0.6 equivalent of tris(2-aminomethyl)amine resin, i.e. 3 mg. Each tube is filtered, concentrated and then taken up in DMSO to give a solution containing 1 μmol per liter of the expected compound. The nature of the compound and its purity are monitored by measuring the HPLC retention time (Rt minutes) and the mass spectrum.

TABLE XV (I)

Examples R₁ Mass Rt minutes 354

710 4.62 355

744 4.87 356

736 4.7 357

736 4.83 358

702 4.51 359

732 4.73 360

746 4.92 361

750 4.79 362

732 4.81 363

750 4.95 

1. A compound of formula:

in which: R₁ represents a phenylvinyl group; a phenyl group which is unsubstituted or substituted one or more times with R₆, which may be identical or different; a naphthyl group which is unsubstituted or substituted one or more times with R₆, which may be identical or different; a tetrahydronaphthyl group; a naphtho[2,3-d][1,3]dioxol-6-yl group; a heterocyclic radical chosen from quinolyl, isoquinolyl, 1-benzofur-2-yl, 2,1,3-benzoxadiazol-4-yl, 2,1,3-benzothiadiazol-4-yl, 1,3-benzothiazol-2-yl, 1-benzothiophen-2-yl, 1H-pyrazol-4-yl, thien-2-yl, 5-isoxazothien-2-yl, benzothien-2-yl, thieno[3,2-c]pyrid-2-yl; the said heterocyclic radicals being unsubstituted or substituted one or more times with R₆, which may be identical or different; R₂ represents hydrogen or a (C₁–C₄)alkyl group and R₃ represents a phenyl group which is unsubstituted or substituted one or more times with R₇, which may be identical or different; a heterocyclic radical chosen from benzo[1,3]dioxol-5-yl, 2,1,3-benzothiadiazol-5-yl, 2,1,3-benzoxadiazol-5-yl, benzothiophen-5-yl, 2,3-dihydrobenzo[1,4]dioxin-6-yl, benzofuryl, dihydrobenzofuryl, 1,3-thiazol-2-yl, furyl and thienyl, the said heterocyclic radical being an substituted or substituted one or more times with a halogen atom or with a (C₁–C₄)alkyl group; or alternatively R₂ represents a phenyl group which is unsubstituted or substituted one or more times with R₆, which may be identical or different; a heterocyclic radical chosen from benzo[1,3]diaxol-5-yl, pyridyl and indanyl, and R₃ represents hydrogen; R₄ represents a group —CONR₈R₉; a group —CSNR₈R₉; a group —COR₁₃; a phenyl group which is unsubstituted or substituted one or more times with R₁₀; a heterocyclic radical chosen from pyridyl, imidazolyl, furyl, benzimidazolyl, benzothiazol-2-yl and benzo[1,3]dioxol-5-yl, the said radicals being unsubstituted or substituted with one or more methyl groups or halogen atoms; R₅ represents a group —CH₂NR₁₁R₁₂ or —CH₂N(O)R₁₁R₁₂; R₆ represents a halogen atom; a (C₁–C₄)alkyl group; a trifluoromethyl group; a (C₁–C₄)alkoxy group; a 2-fluoroethoxy group; a trifluoromethoxy, methylenedioxy or difluoromethylenedioxy group; R₇ represents a halogen atom; a (C₁–C₄)alkyl group; a phenyl group; a trifluoromethyl group; a (C₁–C₄)alkoxy group; a benzyloxy group; a trifluoromethoxy group; R₈ and R₉ each independently represent hydrogen; a (C₁–C₄alkyl group; a (C₃–C₇)cycloalkyl group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an ω-(C₁–C₄)dialkylamino(C₂–C₄)alkyl group; or alternatively R₈ and R₉, together with the nitrogen atom to which they are attached, constitute a heterocyclic radical chosen from pyrrolidinyl, morpholin-4-yl, thiomorpholin-4-yl, azepin-1-yl, piperidyl which is unsubstituted or substituted with one or more halogen atoms or one or more (C₁–C₄)alkyl or (C₁–C₄)alkoxy or trifluoromethyl groups, 3,4-dihydropiperid-1-yl, cyclohexyl-spiro-4-piperid-1-yl, and piperazinyl which is unsubstituted or substituted with one or more (C₁–C₄)alkyl groups; R₁₀ represents a halogen atom; a (C₁–C₄)alkyl group; a hydroxy group; a (C₁–C₆)alkoxy group; R₁₀ can also represent a group —CH₂NR₁₁R₁₂ when R₅ represents a group —CH₂NR₁₁R₁₂, the said groups then being identical; R₁₁ and R₁₂ each independently represent hydrogen; a (C₁–C₆)alkyl group; a (C₂–C₄)alkenyl group; a (C₃–C₇)cycloalkyl group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an ω-hydroxy(C₂–C₄)alkylene group; an ω-methoxy(C₂–C₄)alkylene group; an ω-trifluoromethyl(C₂–C₄)alkylene group; an ω-halo(C₂–C₄)alkylene group, or alternatively R₁₁ and R₁₂, together with the nitrogen atom to which they are attached, constitute a monocyclic, bicyclic or heterocyclic radical chosen from azetidinyl, pyrrolidinyl, morpholin-4-yl, thiomorpholin-4-yl, piperid-1-yl, piperazin-1-yl, 1,2,3,6-tetrahydropyrid-1-yl, 2,3,4,5-tetrahydropyridinium, decahydroquinolyl, decahydroisoquinolyl, tetrahydroisoquinolyl, octahydro-1H-isoindolyl, (C₄–C₆)cycloalkyl-spiro-piperidyl, 3-azabicyclo[3.1.0]hexyl and 7-azabicyclo[2.2.1]heptan-7-yl, which may be unsubstituted or substituted one or more times with a halogen atom or a (C₁–C₄)alkyl, hydroxyl, (C₁–C₄)alkoxy, trifluoromethyl, difluoromethylene or phenyl group; R₁₃ represents a phenyl, thiazol-2-yl or pyridyl group; or a salt thereof with a mineral or organic acid, or a solvate or hydrate of said compound or said salt.
 2. The compound according to claim 1 of formula:

in which: R₁ represents a phenylvinyl group; a phenyl group which is unsubstituted or substituted one or more times with R₆, which may be identical or different; a naphthyl group which is unsubstituted or substituted one or more times with R₆, which may be identical or different; a tetrahydronaphthyl group; a heterocyclic radical chosen from quinolyl, 1-benzofur-2-yl, 2,1,3-benzoxadiazol-4-yl, 2,1,3-benzothiadiazol-4-yl, 1,3-benzothiazol-2-yl, 1-benzothiophen-2-yl, 1H-pyrazol-4-yl, thien-2-yl, 5-isoxazolethien-2-yl, benzothien-2-yl, thieno[3,2-c]pyrid-2-yl; naphtho[2,3-d][1,3]dioxol-6-yl; the said heterocyclic radicals being unsubstituted or substituted one or more times with R₆, which may be identical or different; R₂ represents hydrogen or a (C₁–C₄)alkyl group and R₃ represents a phenyl group which is unsubstituted or substituted one or more times with R₇, which may be identical or different; a heterocyclic radical chosen from benzo[1,3]dioxol-5-yl which is unsubstituted or substituted in the −2 position with two fluorine atoms; 2,1,3-benzothiadiazol-5-yl; 2,3-dihydrobenzo[1,4]dioxin-6-yl; 1,3-thiazol-2-yl; 1-benzofur-2-yl; 1-benzofur-5-yl; furyl; thien-2-yl; thien-3-yl; or R₂ represents a phenyl group which is unsubstituted or substituted one or more times with R₆, which may be identical or different; a heterocyclic radical chosen from benzo[1,3]dioxol-5-yl; pyridyl; indanyl; and R₃ represents hydrogen; R₄ represents a group —CONR₈R₉; a phenyl group which is unsubstituted or substituted one or more times with R₁₀; a heterocyclic radical chosen from pyridyl, imidazolyl, furyl, benzimidazolyl, benzothiazol-2-yl and benzo[1,3]dioxol-5-yl, the said radicals being unsubstituted or substituted with a methyl; R₅ represents a group —CH₂NR₁₁R₁₂; R₆ represents a halogen atom; a (C₁–C₄)alkyl group; a trifluoromethyl group; a (C₁–C₄)alkoxy group; a 2-fluoroethoxy group; a trifluoromethoxy, methylenedioxy or difluoromethylenedioxy group; R₇ represents a halogen atom; a (C₁–C₄)alkyl group; a trifluoromethyl group; a (C₁–C₄)alkoxy group; a benzyloxy group; a trifluoromethoxy group; R₈ and R₉ each independently represent hydrogen; a (C₁–C₄)alkyl group; a (C₃–C₇)cycloalkyl group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an ω-(C₁–C₄)dialkylamino(C₂–C₄)alkyl group; or R₈ and R₉, together with the nitrogen atom to which they are attached, constitute a heterocyclic radical chosen from pyrrolidinyl, piperidyl, morpholin-4-yl, thiomorpholin-4-yl, piperazin-1-yl, 4-methylpiperazin-1-yl, 4-methylpiperid-1-yl, 2-methylpiperid-1-yl, 4,4-dimethylpiperid-1-yl, 4,4-difluoropiperid-1-yl, 4-trifluoromethylpiperid-1-yl, 3,4-dihydropiperid-1-yl, azepin-1-yl and cyclohexyl-spiro-4-piperid-1-yl; R₁₀ represents a halogen atom; a (C₁–C₄)alkyl group; a hydroxyl group; a (C₁–C₆alkoxy group; R₁₀ can also represent a group —CH₂NR₁₁R₁₂ when R₅ represents a group —CH₂NR₁₁R₁₂, the said groups then being identical; R₁₁ and R₁₂ each independently represent hydrogen; a (C₁–C₆)alkyl group; a (C₂–C₄alkenyl group; a (C₃–C₇)cycloalkyl group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an ω-hydroxy(C₂–C₄)alkylene group; an ω-methoxy(C₂–C₄)alkylene group; an ω-trifluoromethyl(C₂–C₄)alkylene group; an ω-halo(C₂–C₄)alkylene group; or R₁₁ and R₁₂, together with the nitrogen atom to which they are attached, constitute a monocyclic, bicyclic or heterocyclic radical chosen from azetidinyl, pyrrolidinyl, morpholin-4-yl, thiomorpholin-4-yl, piperid-1-yl, piperazin-1-yl, 1,2,3,6-tetrahydropyrid-1-yl, decahydroquinolyl, decahydroisoquinolyl, octahydro-1H-isoindolyl, (C₄–C₆)cycloalkyl-spiro-piperidyl and 3-azabicyclo[3.1.0]hexyl, which may be unsubstituted or substituted one or more times with a halogen atom or a (C₁–C₄)alkyl, hydroxyl, (C₁–C₄)alkoxy, trifluoromethyl, difluoromethylene or phenyl group; or a salt thereof with a mineral or organic acid, or a solvate or hydrate of said compound or said salt.
 3. The compound of formula (I) according to claim 1 in which R₁ represents a 2,4-dichloro-3-methylphenyl, naphthyl, 6-methoxynaphth-2-yl, 3-methylbenzothiophen-2-yl, 3-methyl-5-chlorobenzothiophen-2-yl, 3-methyl-5-methoxybenzothiophen-2-yl, 3-methyl-6-methoxybenzothiophen-2-yl or 3-methyl-1-benzofur-2-yl group.
 4. The compound of formula (I) according to claim 1 in which R₂ represents hydrogen and R₃ represents a benzo[1,3]dioxol-5-yl or phenyl group which is unsubstituted or substituted with a halogen.
 5. The compound of formula (I) according to claim 1 in which R₄ represents a group —CONR₈R₉ and —NR₈R₉ represents a di(C₁–C₄)alkylamino radical, a pyrrolidinyl or piperidyl group which is unsubstituted or substituted one or two times with a methyl or a halogen.
 6. The compound of formula (I) according to claim 1 in which R₅ represents a group —CH₂NR₁₁R₁₂ in which —NR₁₁R₁₂ represents an ethylisobutylamino, ethylisopropylamino, ethyl-tert-butylamino, diisopropylamino, cyclopentylmethylamino or cyclopentylethylamino radical or a piperidyl radical which is unsubstituted or substituted one or more times with a methyl or a halogen.
 7. The compound according to claim 1 of formula:

in which: R₁ represents a 2,4-dichloro-3-methylphenyl, naphthyl, 6-methoxynaphth-2-yl, 3-methylbenzothiophen-2-yl, 3-methyl-5-chlorobenzothiophen-2-yl, 3-methyl-5-methoxybenzothiophen-2-yl, 3-methyl-6-methoxybenzothiophen-2-yl or 3-methyl-1-benzofur-2-yl group; R₃ represents a benzo[1,3]dioxol-5-yl or phenyl group which is unsubstituted or substituted with a halogen; R₈ and R₉, together with the nitrogen atom to which they are attached, constitute a di(C₁–C₄)alkylamino, pyrrolidinyl or piperidyl radical which is unsubstituted or substituted one or two times with a methyl or a halogen; R₁₁ and R₁₂, together with the nitrogen atom to which they are attached, constitute an ethylisobutylamino, ethylisopropylamino, ethyl-tert-butylamino, diisopropylamino, cyclopentylmethylamino or cyclopentylethylamino radical or a piperidyl radical which is unsubstituted or substituted one or more times with a methyl or a halogen; or a salt thereof with a mineral or organic acid, or a solvate or hydrate of said compound or said salt.
 8. The compound according to claim 1, chosen from: (R,R) 2-((3-(1,3-benzodioxol-5-yl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide; (R,R) 2-((3-(1,3-benzodioxol-5-yl)-3-((2-naphthylsulphonyl)amino)propanoyl)amino)-3-(4-((cyclopentyl(ethyl)amino)methyl)phenyl)-N-isopropyl-N-methylpropanamide; (R,R) 3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-2-((3-(((6-methoxy-2-naphthyl)sulphonyl)amino)-3-phenylpropanoyl)amino)-N-isopropyl-N-methyl propanamide; (R,R) 2-((3-(1,3-benzodioxol-5-yl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((tert-butyl(ethyl)amino)methyl)phenyl)-N-isopropyl-N-methylpropanamide; (R,R) 2-((3-(1,3-benzodioxol-5-yl)-3-(((3-methyl-1-benzothiophen-2-yl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide; (R,R) 3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-2-((3-(((5-methoxy-3-methyl-1-benzothiophen-2-yl)sulphonyl)amino)-3-phenylpropanoyl)amino)-N-isopropyl-N-methylpropanamide; (R,R) N-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)benzyl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)-3-phenyl-N-(1-piperidylcarbonyl)propanamide; (R,R) 2-((3-(4-chlorophenyl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide; (R,R) 3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-2-((3-(((6-methoxy-2-naphthyl)sulphonyl)amino)-3-phenylpropanoyl)amino)-N,N-diethylpropanamide; (R,R) 2-((3-(3-fluorophenyl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide; (R,R) 2-((3-(1,3-benzodioxol-5-yl)-3-(((3-methyl-1-benzofur-2-yl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide; (R,R) 2-((3-(1,3-benzodioxol-5-yl)-3-((2-naphthylsulphonyl)amino)propanoyl)amino)-3-(3-((tert-butyl(ethyl)amino)methyl)phenyl)-N-isopropyl-N-methylpropanamide; (R,R) 3-(4-(7-azabicyclo[2.2.1]hept-7-ylmethyl)phenyl)-2-((3-(1,3-benzodioxol-5-yl)-3-(((6-methoxynaphthyl)sulphonyl)amino)propanoyl)amino)-N-isopropyl-N-methyl propanamide; or a salt thereof, or a solvate or hydrate of said compound or said salt.
 9. A process for preparing a compound of formula (I) according to claim 1, or a salt thereof, or a solvate or hydrate of said compound or said salt, wherein: an acid or a functional derivative of this acid of formula:

 in which R₂ and R₃ are as defined for a compound of formula (I) in claim 1, X represents either hydrogen or a group R₁SO₂— in which R₁ is as defined for a compound of formula (I) in claim 1, or an N-protecting group, is reacted with a compound of formula:

 in which Y represents either R₄ as defined for a compound of formula (I) in claim 1, or a (C₁–C₄)alkoxycarbonyl, and Z represents either R₅ as defined for a compound of formula (I) in claim 1, or a —CN group, on the condition that, when Y represents R₄ which represents a phenyl substituted with a group —CH₂NR₁₁R₁₂, Z represents R₅ which represents a group —CH₂NR₁₁R₁₂, R₁₁ and R₁₂ being as defined for a compound of formula (I) in claim 1; and when X=R₁SO₂—, Y=R₄ and Z=R₅, the expected compound of formula (I) is obtained; or when X≠R₁SO₂ and/or Y≠R₄ and/or Z≠R₅, that is to say when at least one of the X, Y and Z groups represents, respectively, X=H or an N-protecting group, Y=(C₁–C₄)alkoxycarbonyl, Z=—CN, the compound thus obtained of formula:

 is subjected to one or more of the following steps: when X represents an N-protecting group, this group is removed and the compound thus obtained of formula:

 is reacted with a sulphonyl halide of formula: R₁SO₂-Hal  (VI)  in which Hal represents a halogen; when Y represents a (C₁–C₄)alkoxycarbonyl, it is hydrolyzed and the acid thus obtained or a functional derivative of this acid of formula:

 is reacted with a compound of formula: HNR₈R₉  (VIII);  in which R₈ and R₉ are as defined for a compound of formula (I) from claim 1; when Z represents a —CN group, this group is converted into R₅.
 10. A compound of formula:

in which: X represents hydrogen or an N-protecting group; R₃ represents a heterocyclic radical chosen from: (2,2-difluoro)benzo[1,3]dioxol-5-yl, 3-isopropylphenyl, 3-trifluoromethoxyphenyl, 2,1,3-benzoxadiazol-5-yl, benzothiophen-5-yl, 1-benzofur-6-yl, 1-benzofur-4-yl, 1-benzofur-3-methyl-5-yl, 2,3-dihydrobenzofur-4-yl; or a salt thereof with a mineral or organic acid, in racemic form or in the form of a pure enantiomer.
 11. A compound of formula:

in which: R₁ represents a phenylvinyl; a heterocycle chosen from 1-benzofur-2-yl, 2,1,3-benzoxadiazol-4-yl, 2,1,3-benzothiadiazol-4-yl, 1,3-benzothiazol-2-yl, 1-benzothiophen-2-yl, 1H-pyrazol-4-yl, thien-2-yl, 5-isoxazolthien-2-yl, benzothien-2-yl, thieno[3,2-c]pyrid-2-yl and naphtho[2,3-d][1,3]dioxol-6-yl; the said heterocycles being unsubstituted or substituted one or more times with R₆, which may be identical or different; R₂ represents hydrogen or a (C₁–C₄)alkyl and R₃ represents a phenyl which is unsubstituted or substituted one or more times with R₇, which may be identical or different; a heterocyclic radical chosen from benzo[1,3]dioxol-5-yl which is unsubstituted or substituted in position −2 with two fluorine atoms; 2,1,3-benzothiodiazol-5-yl; 2,1,3-benzoxadiazol-5-yl; benzothiophen-5-yl; 2,3-dihydrobenzo[1,4]dioxin-6-yl; 1-benzofur-2-yl; 1-benzofur-5-yl; 1-benzofur-6-yl; 1-benzofur-4-yl; 1-benzofur-3-methyl-5-yl; 2,3-dihydrobenzofur-4-yl; 1,3-thiazol-2-yl; furyl; thien-2-yl; thien-3-yl; or R₂ represents a phenyl which is unsubstituted or substituted one or more times with R₆, which may be identical or different; a benzo[1,3]dioxol-5-yl; a pyridyl; an indanyl; and R₃ represents hydrogen; R₆ represents a halogen atom; a (C₁–C₄)alkyl group; a trifluoromethyl group; a (C₁–C₄)alkoxy group; a 2-fluoroethoxy group; a trifluoromethoxy, methylenedioxy or difluoromethylenedioxy group; R₇ represents a halogen atom; a (C₁–C₄)alkyl group; a phenyl group; a trifluoromethyl group; a (C₁–C₄)alkoxy group; a benzyloxy group; a trifluoromethoxy group; or a salt thereof with a mineral or organic acid, in racemic form or in the form of a pure enantiomer.
 12. A compound of formula:

in which; R₄ represents a group —CONR₈R₉; a group —CSNR₈R₉; a group —COR₁₃; a phenyl group which is unsubstituted or substituted one or more times with R₁₀; a heterocyclic radical chosen from pyridyl, imidazolyl, furyl, benzimidazolyl, benzothiazol-2-yl and benzo[1,3]dioxol-5-yl, the said radicals being unsubstituted or substituted with a methyl; R₅ represents a group —CH₂NR₁₁R₁₂ or —CH₂N(O)R₁₁R₁₂; R₈ and R₉ each independently represent hydrogen; a (C₁–C₄)alkyl group; a (C₃–C₇)cycloalkyl group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an ω-(C₁–C₄)dialkylamino(C₂–C₄)alkyl group; or alternatively R₈ and R₉, together with the nitrogen atom to which they are attached, constitute a heterocyclic radical chosen from pyrrolidinyl, piperidyl, morpholin-4-yl, thiomorpholin-4-yl, piperazin-1-yl, 4-methylpiperazin-1-yl, 4-methylpiperid-1-yl, 2-methylpiperid-1-yl, 4,4-dimethylpiperid-1-yl, 4,4-difluoropiperid-1-yl, 4-trifluoromethylpiperid-1-yl, 4-methoxypiperid-1-yl, 3,4-dihydropiperid-1-yl, azepin-1-yl and cyclohexyl-spiro-4-piperid-1-yl; R₁₀ represents a halogen atom; a (C₁–C₄)alkyl group; a hydroxy group; a (C₁–C₆)alkoxy group; R₁₀ can also represent a group —CH₂NR₁₁R₁₂ when R₅ represents a group —CH₂NR₁₁R₁₂, the said groups then being identical; R₁₁ and R₁₂ each independently represent hydrogen; a (C₁–C₆)alkyl group; a (C₂–C₄)alkenyl group; a (C₃–C₇)cycloalkyl group; a (C₃–C₇)cycloalkyl(C₁–C₄)alkyl group; an ω-hydroxy(C₂–C₄)alkylene group; an ω-methoxy(C₂–C₄)alkylene group; an ω-trifluoromethyl(C₂–C₄)alkylene group; an ω-halo(C₂–C₄)alkylene group; or alternatively R₁₁ and R₁₂, together with the nitrogen atom to which they are attached, constitute a monocyclic, bicyclic or heterocyclic radical chosen from azetidinyl, pyrrolidinyl, morpholin-4-yl, thiomorpholin-4-yl, piperid-1-yl, piperazin-1-yl, 1,2,3,6-tetrahydropyrid-1-yl, 2,3,4,5-tetrahydropyridinium, decahydroquinolyl, decahydroisoquinolyl, tetrahydroisoquinolyl, octahydro-1H-isoindolyl, (C₄–C₆)cycloalkyl-spiro-piperidyl, 3-azabicyclo[3.1.0]hexyl and 7-azabicyclo[2.2.1]heptan-7-yl, which may be unsubstituted or substituted one or more times with a halogen atom or a (C₁–C₄)alkyl, hydroxyl, (C₁–C₄)alkoxy, trifluoromethyl or difluoromethylene group; R₁₃ represents a phenyl, thiazol-2-yl or pyridyl group; or a salt thereof with a mineral or organic acid, in the form of a racemic mixture or of a pure enantiomer.
 13. A pharmaceutical composition containing, as active principle, a compound according to claim 1 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 14. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 1. 15. The compound of formula (I) according to claim 2 in which R₁ represents a 2,4-dichloro-3-methylphenyl, naphthyl, 6-methoxynaphth-2-yl, 3-methylbenzothiophen-2-yl, 3-methyl-5-chlorobenzothiophen-2-yl, 3-methyl-5-methoxybenzothiophen-2-yl, 3-methyl-6-methoxybenzothiophen-2-yl or 3-methyl-1-benzofur-2-yl group.
 16. The compound of formula (I) according to claim 2 in which R₂ represents hydrogen and R₃ represents a benzo[1,3]dioxol-5-yl or phenyl group which is unsubstituted or substituted with a halogen.
 17. The compound of formula (I) according to claim 2 in which R₄ represents a group —CONR₈R₉ and —NR₈R₉ represents a di(C₁–C₄)alkylamino radical, a pyrrolidinyl or piperidyl group which is unsubstituted or substituted one or two times with a methyl or a halogen.
 18. The compound of formula (I) according to claim 2 in which R₅ represents a group —CH₂NR₁₁R₁₂ in which —NR₁₁R₁₂ represents an ethylisobutylamino, ethylisopropylamino, ethyl-tert-butylamino, diisopropylamino, cyclopentylmethylamino or cyclopentylethylamino radical or a piperidyl radical which is unsubstituted or substituted one or more times with a methyl or a halogen.
 19. The compound according to claim 2 of formula:

in which: R₁ represents a 2,4-dichloro-3-methylphenyl, naphthyl, 6-methoxynaphth-2-yl, 3-methylbenzothiophen-2-yl, 3-methyl-5-chlorobenzothiophen-2-yl, 3-methyl-5-methoxybenzothiophen-2-yl, 3-methyl-6-methoxybenzothiophen-2-yl, or 3-methyl-1-benzofur-2-yl group; R₃ represents a benzo[1,3]dioxol-5-yl or phenyl group which is unsubstituted or substituted with a halogen; R₈ and R₉, together with the nitrogen atom to which they are attached, constitute a di(C₁–C₄)alkylamino, pyrrolidinyl or piperidyl radical which is unsubstituted or substituted one or two times with a methyl or a halogen; R₁₁ and R₁₂, together with the nitrogen atom to which they are attached, constitute an ethylisobutylamino, ethylisopropylamino, ethyl-tert-butylamino, diisopropylamino, cyclopentylmethylamino or cyclopentylethylamino radical or a piperidyl radical which is unsubstituted or substituted one or more times with a methyl or a halogen; or a salt thereof with a mineral or organic acid, or a solvate or hydrate or said compound or said salt.
 20. (R,R) 2-((3-(1,3-benzodioxoI-5-yl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide or a salt, solvate or hydrate thereof, or a solvate or hydrate of said salt according to claim
 8. 21. (R,R) 2-((3-(1,3-benzodioxol-5-yl)-3-(((6-methoxy-2-naphthyl)sulphonyl)-amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide hydrochloride according to claim
 20. 22. A pharmaceutical composition containing, as active principle, a compound according to claim 2 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 23. A pharmaceutical composition containing, as active principle, a compound according to claim 3 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 24. A pharmaceutical composition containing, as active principle, a compound according to claim 4 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 25. A pharmaceutical composition containing, as active principle, a compound according to claim 5 or a pharmaceutically acceptable salt and/or thereof, or a solvate or hydrate of said compound or said salt.
 26. A pharmaceutical composition containing, as active principle, a compound according to claim 6 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 27. A pharmaceutical composition containing, as active principle, a compound according to claim 7 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 28. A pharmaceutical composition containing, as active principle, a compound according to claim 8 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 29. A pharmaceutical composition containing, as active principle, a compound according to claim 15 or a pharmaceutically acceptable salt thereof, or a solvte or hydrate of said compound or said salt.
 30. A pharmaceutical composition containing, as active principle, a compound according to claim 16 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 31. A pharmaceutical composition containing, as active principle, a compound according to claim 17 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 32. A pharmaceutical composition containing, as active principle, a compound according to claim 18 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 33. A pharmaceutical composition containing, as active principle, a compound according to claim 19 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 34. A pharmaceutical composition containing, as active principle, a compound according to claim 20 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 35. A pharmaceutical composition containing, as active principle, a compound according to claim 21 or a pharmaceutically acceptable salt thereof, or a solvate or hydrate of said compound or said salt.
 36. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 2. 37. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 3. 38. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 4. 39. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 5. 40. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 6. 41. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 7. 42. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 8. 43. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment am effective amount of a compound according to claim
 15. 44. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 16. 45. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 17. 46. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 18. 47. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 19. 48. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 20. 49. A method for treating pain or inflammation which comprises administering to a patient in need of such treatment an effective amount of a compound according to claim
 21. 50. (R,R) 2-((3-(1,3-benzodioxol-5-yl)-3-(((6-methoxy-2-naphthyl)sulphonyl)amino)propanoyl)amino)-3-(4-((2,6-cis-dimethyl-1-piperidyl)methyl)phenyl)-N-isopropyl-N-methylpropanamide fumarate according to claim
 20. 